These maps show changes that occurred between 2006 (left) and 2015
(right).
Sidor
Ozone (Dobson units)
Which sentence best describes the changes shown?
A. The hole in the ozone layer over Antarctica got smaller.
B. The hole in the ozone layer over Antarctica got bigger.
C. The hole in the ozone layer over Antarctica disappeared.
D. The hole in the ozone layer over Antarctica did not change.
o
Answers
Answer:
The hole over antartica has gotten smaller
Explanation:
According to the question, The hole in the ozone layer over Antarctica got smaller.
Why is the ozone layer important?
Ozone protects the Earth from harmful ultraviolet (UV) rays from the Sun. Without the Ozone layer in the atmosphere, life on Earth would be very difficult.
Thus, option "A" is correct.
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Related Questions
Which of the following objects is the most likely to be magnetc?
Aa quartz bracelet
B. an iron pot
C. a leather purse
D. an aluminum can
Answers
Answer:
Your correct answer is B. An iron pot
Explanation:
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A scientist wanted to find out if the amount of plant food affects the number of beans produced in bean plants. Which of the following would be a good hypothesis for her experiment? A) since plants grown in poor soil often need food to grow is expected that bean plants given the most plant food will grow the tallest. B) since plants grown in poor soil often need food to grow is expected that the bean plants given the most water will produce the most beans. C) since plants grown in poor soil often need to need food to grow it is expected that bean plants given the most water will grow the tallest. D) since plants grown in poor soil often need food to grow it is expected that bean plants given the most plant food will produce the most beans.
Answers
Answer:
The correct option would be D) since plants grown in poor soil often need food to grow it is expected that bean plants given the most plant food will produce the most beans.
Explanation:
A hypothesis can be described as a tentative statement which can be proved to be either right or wrong through scientific experiments.
Since the scientists wanted to test the effect of amounts of plant food on the number of beans produced hence the most suitable hypothesis would be " since plants grown in poor soil often need food to grow it is expected that bean plants given the most plant food will produce the most beans."
Other options like option A are not correct because option A refers to the eight of the plant whereas we want to observe the number of beans.
Answer:
D) since plants grown in poor soil often need food to grow it is expected that bean plants given the most plant food will produce the most beans.
Explanation:
A hypothesis can be described as a tentative statement which can be proved to be either right or wrong through scientific experiments.
Since the scientists wanted to test the effect of amounts of plant food on the number of beans produced hence the most suitable hypothesis would be " since plants grown in poor soil often need food to grow it is expected that bean plants given the most plant food will produce the most beans."
Rabbit ears can be either shorter floppy where short ears or dominant over floppy ears there are 653 individuals in a population of 104 rabbits have floppy years and 549 have short ears find the frequency of dominant and recessive alleles and the frequency of individuals with dominant heterozygous and recessive genotypes
Answers
Answer:
frequency of dominant and recessive alleles - 0.6, 0.4
frequency of individuals with dominant, heterozygous and recessive genotypes - 0.36, 0.48, 0.16
Explanation:
Given -
Short ears (S) is dominant over floppy ears.
Total population of rabbits [tex]= 653[/tex]
Population of rabbits with floppy ears [tex]= 104[/tex]
Population of rabbits with short ears [tex]= 549[/tex]
Frequency of rabbits with floppy ears is equal to
[tex]\frac{104}{653} \\= 0.159[/tex]
Thus as per Hardy weinberg's equation, frequency of recessive phenotype is represented by [tex]q^2\\[/tex]
Thus,
[tex]q^2 = 0.159 =0.16\\q = \sqrt{0.16} \\q = 0.4[/tex]
Thus,
[tex]p = 1-q\\p = 1-0.4\\p= 0.6[/tex]
Frequency of rabbits with short ears only
[tex]= p^ 2 \\= 0.6^2\\= 0.36\\[/tex]
Frequency of heterozygous rabbit (Ss)
[tex]p^2 + q^2 + 2pq = 1\\0.16 + 0.36 + 2pq = 1\\2pq = 1 - 0.36-0.16\\2pq = 0.48[/tex]
The frequency of the dominant allele is 0.81, the frequency of the recessive allele is 0.19, the frequency of individuals with dominant heterozygous genotype is 0.3098, and the frequency of individuals with recessive genotype is 0.0361.
Explanation:The question asks for the frequency of the dominant and recessive alleles, as well as the frequency of individuals with dominant heterozygous and recessive genotypes. To calculate these frequencies, we need to know the number of individuals with each genotype.
Given that there are 653 individuals with floppy ears and 549 individuals with short ears, we can determine the frequencies as follows:
The frequency of the dominant allele (p) can be calculated as the square root of the frequency of individuals with floppy ears. In this case, p = √(653/104) = 0.81.The frequency of the recessive allele (q) can be calculated as 1 - p. In this case, q = 1 - 0.81 = 0.19.The frequency of individuals with dominant heterozygous (Hh) genotype can be calculated as 2 * p * q. In this case, Hh = 2 * 0.81 * 0.19 = 0.3098.The frequency of individuals with recessive (hh) genotype can be calculated as q². In this case, hh = 0.19² = 0.0361.Therefore, the frequency of the dominant allele is 0.81, the frequency of the recessive allele is 0.19, the frequency of individuals with dominant heterozygous genotype is 0.3098, and the frequency of individuals with recessive genotype is 0.0361.
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Which would be the most useful next step for chloe to develop the photosynthesis model further?
Answers
The most useful next step for Chloe to develop the photosynthesis model further is Option B. Represent a chemical reaction in the autotroph that produces high-energy carbohydrates.
Photosynthesis is a system utilized by the flora and other organisms to transform light power into chemical power that, through cellular respiration, can later be released to gasoline the organism's sports. Photosynthesis is the method by which flowers use daylight, water, and carbon dioxide to create oxygen and strength inside the shape of sugar.
Photosynthesis is a technique by means of which phototrophs convert mild strength into chemical energy, which is later used for gas cell activities. The chemical strength is stored within the form of sugars, which are comprised of water and carbon dioxide.
In plant life, photosynthesis takes place in chloroplasts, which comprise chlorophyll. Chloroplasts are surrounded with the aid of a double membrane and contain a third inner membrane, referred to as the thylakoid membrane, that bureaucracy long folds within the organelle.
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Disclaimer:- your question is incomplete, please see below for the complete question.
A. Extend the lines for sunlight so that they pass through the autotroph.
B. Represent a chemical reaction in the autotroph that produces high-energy carbohydrates.
C. Represent a chemical reaction in the autotroph that produces high-energy proteins.
D. Draw a circle to represent a heterotroph, and draw a line to connect it to the autotroph.
Which of these is the source of nutrients for an autotroph?
O
A. Eucalyptus leaves
O
B. Mushrooms
O
C. Inorganic substances
O
D. Animals
Answers
Answer:
the answer is c
Explantation:
Final answer:
The source of nutrients for an autotroph is c) inorganic substances. Autotrophs, including plants and some bacteria, utilize inorganic molecules to create their own food through processes such as photosynthesis and chemosynthesis.
Explanation:
The source of nutrients for an autotroph is C. Inorganic substances. Autotrophs are organisms that can produce their own food using inorganic molecules, unlike heterotrophs, which require organic compounds for nutrition. Autotrophic organisms, such as plants and certain bacteria, convert inorganic carbon dioxide into organic carbon compounds through processes like photosynthesis or chemosynthesis. For instance, chemoautotrophs use inorganic molecules as a source of energy, with specific bacteria and archaea being examples of this group. Similarly, the primary producers in an ocean grazing food web, such as phytoplankton, utilize inorganic nutrients from their surroundings to produce organic matter.
What is the point where rivers change from broad, deep, and slow-moving to narrow and swift?
the coastal plain
the piedmont plateau
the mountain ridge
the fall line
Answers
The correct answer is option (D). The fall line is the correct term for the location where a river's flow changes from broad and slow to narrow and swift.
The fall line is the point where rivers change from broad, deep, and slow-moving to narrow and swift. This transition occurs because the fall line marks the geological boundary between the hard, resistant rocks of the Piedmont Plateau and the softer, more erodible rocks of the coastal plain.
As a river flows from the coastal plain to the Piedmont Plateau, it encounters this change in rock type, which often results in a series of waterfalls or rapids, hence the term fall line. This is where the river's gradient increases, causing the water to flow more quickly and the river channel to narrow.
The other options provided do not describe the specific point of transition in river characteristics as accurately as the fall line does:
- The coastal plain is a flat, low-lying area near the coast where rivers tend to be broad and slow-moving.
- The Piedmont Plateau is an area of rolling hills where rivers may be faster-flowing but does not specifically refer to the transition point.
- The mountain ridge is a long, narrow elevation on a mountain, which is not related to the transition of river characteristics from slow to swift.
The complete question is:
What is the point where rivers change from broad, deep, and slow-moving to narrow and swift?
A) the coastal plain
B) the piedmont plateau
C) the mountain ridge
D) the fall line
is the breakdown of glucose into a form that converts it into a more useful energy for the cell.
Glycolysis
Photosynthesis
Osmosis
Answers
Glycolysis is the breakdown of glucose into a form that converts it into a more useful enerfy for the cell.
what are 3 positive and 3 negative aspects of trading internationally
Answers
Answer:
answer in explanation
Explanation:
Positives:
1) We start to trade with other countries introducing new items
2) labor might be cheap in other country's thus we can take advantage of that
3)They create jobs and boost the economics
Negatives:
1) Government might place tariffs
2) Tariffs can reduce jobs in that specific industry
3)Country's can loose their farming based economy and start to buy off others
Positive aspects of international trading include increased access to goods and services, economic growth, and export opportunities. Negative aspects include job losses, dependency on foreign markets, and trade imbalances.
Explanation:Positive Aspects of International Trading:Increased access to a wider variety of goods and services from different countries
Opportunities for economic growth and expansion of domestic industries
Potential for increased income and job creation through export opportunitiesNegative Aspects of International Trading:
Competition from foreign industries may lead to job losses and factory closures
Dependency on foreign markets and fluctuations in exchange rates can pose risks
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Eggs are developed and released by the
Sperm is produced by the
Answers
Answer:
Eggs are developed and released by the ovaries.
Sperm is produced by the testes.
Explanation:
Ovaries are the site in females where the production of egg takes place. After the formation of an egg, the egg is transported to the fallopian tube, where it might undergo fertilization if a sperm unites with it.
Sperms are the male reproductive cells which are produced by many animals. The sperms are produced in the testes of males.
The sperm and the egg unite to form a fertilized zygote.
Answer:
ovaries
testes
Explanation:
Jus took test Edge 2020
Motor neurons release neurotransmitter crosses neuromuscular receptors on muscle Fibers and Initiates a contraction.A toxin made the Clostridium botulinum prevents the release of the neurotronsmitter acetylcholine, preventing it from crossing the neuromuscular junction and binds to muscle fiber receptors. Based on that information, are the symptoms of someone poisoned with botutism?Explain.
Answers
Answer:
The symptoms of someone poisoned with botulism are drooping eyelids , trouble breathing , blurred or double vision, nausea, abdominal cramps , dry mouth , difficulty in speaking or swallowing, facial weakness and muscle weakness resulting in paralysis.
Explanation:
Botulism is caused by botulinum toxin (neurotoxin), which is produced by the bacterium Clostridium botulinum. This toxin blocks the release of the neurotransmitter acetylcholine, prevents it from crossing the neuromuscular junction and binds to muscle fiber receptors. As a result, the nerves are paralyzed and they cannot stimulate the muscle to contract. This causes trouble in breathing, drooping eyelids , blurred or double vision, slurred speech, difficulty in swallowing, facial weakness, nausea, abdominal cramps , dry mouth and muscle weakness which results in flaccid paralysis.
1,why Dna coiled to histone protien 2,what is difference bewteen co-factor and prosthetic group 3,why child get mitrochondrion from their mother cell not from their father cell (explain).
Answers
Answer:
DNA coiled to Histone protein.
Explanation:
1) DNA wrap itself around the histone protein due to the negative charge on the histone, that packed DNA tightly so that it can't be used in protein synthesis.
2) Prosthetic groups are itself co-factors that bind tightly to enzymes or proteins. they can be organic or metallic ions and attached to proteins by covalent bond.
3) The transfer of mitochondrial DNA (mtDNA) from mother to her offspring is known as maternal inheritance. only female can transmit mtDNA beacuse, it can be transmitted through female eggs only. One can inherit mtDNA from exclusively their mother.
4. An uncut lawn becomes a meadow and eventually a forest. This process is an example 01 _
a. symbiosis
c. carrying capacity
b. succession
Answers
Succession is the process by which an uncut lawn develops into a meadow and eventually a forest, beginning with pioneer species and progressing to a climax community.
Explanation:The process in which an uncut lawn becomes a meadow and eventually a forest is an example of succession. Succession is the sequential development of plant and animal communities in an area where no soil initially exists (primary succession) or in an area that has been disturbed and contains soil (secondary succession). This ecological process starts with pioneer species, such as grasses, which improve soil quality and allow other plants to move into the area.
Over time, these pioneer species are replaced by subsequent groups of plants and ultimately by a mature community, often a forest in the case of secondary succession. This eventual stable community is known as the climax community, which will persist until the next significant disturbance. The change in community structure and the diversity of species are influenced by abiotic factors including soil quality, water availability, and climate.
The current eccentricity of Earth is .017. The shape of the Earth's orbit changes from being elliptical (high eccentricity) to being
nearly circular (low eccentricity) in a cycle that takes between 90,000 and 100,000 years. When the orbit is highly elliptical, the
amount of insolation received at perihelion would be on the order of 20 to 30 percent greater than at aphelion. What would be the
predicted result of this change?
A)
A catastrophic event such as one of the previous ice ages.
A much warmer climate than what we are currently experiencing.
24 hours of daylight, as experienced in the summers at both poles
currently
EU
Changes in seasonal variation; there would be no spring or fall throughout
the latitudes
Answers
Answer:
B IS THE CORRECT ANSWER IM JUST GUESSING BTW
Explanation:
Answer:
Option B A much warmer climate than what we are currently experiencing.
24 hours of daylight, as experienced in the summers at both poles
currently
Explanation:
The change in the earth's orbit pathway affects the change in the climatic conditions of the earth. For example, the earth, when it is closer to the sun, results in a warmer climate.
However, the earth, when the axis is a little away from the sun, results in a slight decrease in the temperature of the earth.
Thus, when the orbit is highly elliptical, the amount of isolation received at perihelion would be on the order of 20 to 30 percent greater than at aphelion resulting in a warmer climate.
imagine that a landscaper was frustrated by grasshoppers eating the grass of the lawns that he cares for. The landscaper decided to use a pesticide and successfully killed all of the grasshoppers in the ecosystem. Explain how the lost of all the grasshoppers affect the lizard, rabbit, and snake population.
Answers
Answer: the loss of grasshoppers would result in less food sources for the animals
Explanation: of those animals are the grasshoppers and now they are no longer there anymore, they would have less of a food supply
Final answer:
The loss of grasshoppers can lead to food shortages for lizards and snakes, decreased predator populations, potential rabbit overpopulation and vegetation decline, and demonstrates the critical role of predators and biodiversity in ecosystem management.
Explanation:
Impact of Grasshopper Removal on Lizard, Rabbit, and Snake Populations
The loss of grasshoppers in an ecosystem as a result of pesticide use can significantly affect the populations of other animals such as lizards, rabbits, and snakes. Grasshoppers serve as a food source for lizards and snakes. So, their absence means these predators may face a food shortage, which can lead to a decrease in their populations over time. Rabbits, on the other hand, might initially benefit from reduced competition for vegetation if the grasshoppers are no longer consuming the plants. However, as the predator populations decline, this can lead to an overpopulation of rabbits, which may result in overgrazing and a subsequent decline in vegetation. This indicates the importance of pest-suppressing organisms and the role of predators in maintaining the balance in ecosystems.
Furthermore, the non-target effects of pesticides can cause significant harm as it can kill beneficial species that were not intended to be eradicated. This disrupts food webs and could result in secondary pest outbreaks where other pests, previously controlled by now-depleted natural predators, begin to rise in numbers. This emphasizes the critical role of biodiversity and natural pest control mechanisms as part of ecosystem management.
Living in urban environments can influence an individual's behavior
Please select the best answer from the choices provided
Save and Frit
Answers
Answer:
True.
Explanation:
Living in an urban environment can have an impact on the on individual behaviors as the individual will have to face competition from the other individuals and as a result of the clothing, eating and sleeping habits and behavior will be affected as a city in urban environments have more traffic jams air and noise pollution and high population density.Answer:
True
Explanation:
Im HIM
Which of these statements describes a limitation of the Antarctic Treaty
System?
A. It lacks a plan for proper waste disposal.
B. It does nothing to protect scientists working in Antarctica.
C. It lacks references to mineral resources.
D. It does nothing to protect the atmosphere over Antarctica,
Answers
Answer:
The correct option is D) It does nothing to protect the atmosphere over Antarctica.
Explanation:
On December 1, 1959, the Antarctic Treaty was signed in Washington. According to this treaty, Antarctica was to be used for peaceful purposes. This treaty regulates international relations with the Antarctica region. Freedom to different scientists for research in this area was given through this treaty.
However, the treaty did not discuss anything related to the protection of the atmosphere around Antarctica. Hence, option D can be considered to be a limitation of the Antarctic Treaty System.
I need help with this (#20)
Answers
Answer:
a Anaphase I
b Metaphase I
c Telophase I
d Anaphase II
e Prophase I
f Telophase II
Explanation:
Prophase I begins after the DNA has been duplicated, as shown in picture e. The chromosomes are condensed, and also visible, which is apparent in picture e.
The next stage is called Metaphase I, in which the pairs of homologous chromosomes align at The the centre of the cell and the spindle fibres attach, as shown in picture b.
The pairs of chromosomes are pulled apart to opposite poles of the cell by the spindle fibres., as shown in picture a. This stage is called Anaphase I.
Then, a process called Telophase I occurs, when the cell divides into two daughter cells. One of these cells is shown in picture c.
Picture d shows the stage Anaphase II, where the spindle has attached and the chromatids are pulled to the opposite poles of the cell.
The final picture left is picture f, which shows the daughter cell at the end of meiosis II, where the nuclear envelope is reforming, as in telophase II.
The motion of an object is called inertia. What force works against an object in motion, or inertia?
a.Gravity
b.Transition
c.Normal
d.Friction
Answers
Answer:
i think it is friction bcs gravity helps an abject move and friction causes it to slow down
Explanation:
Two male birds of the same species competing for mates in the same area is which type of competition?
whos your favorite DBS character
Answers
Answer:
Intraspecific competition
Explanation:
Intraspecific competition can be described as a competition which arises between organisms of the same species. The organisms might compete with one another due to the limited resources present such as water, food, shelter, mating partner etc. For example, two male birds of the same species competing for mates in the same area.
On the contrary, interspecific competition can be described as the competition which arises between organisms of different species.
Which of the following is an example of a prey adaptation?
A. a wolf’s sense of smell
B. the big eyes of an owl
C. a rattlesnake’s poisonous fangs
D. the speed of a deer
Answers
Answer:
I think it's D) the speed of a deer
Which biome has multistory communities?
O
A. Taiga
O
B. Tropical rain forest
O
C. Temperate grassland
O
D. Desert
Answers
Answer: B. Tropical rain forest
O
Explanation: The climate and biodiversity of one of Earth's most diverse and iconic biomes. the tropical rain forest. The tropical rain forest biome has four main characteristics: very high annual rainfall, high average temperatures, nutrient-poor soil, and high levels of biodiversity
What is said to be 'paid back' by the oxidation of lactic acid after anaerobic respiration?
Answers
Answer:
oxygen
Explanation:
the oxygen debt must be ‘repaid’ once exercise stops causing deep breathing for some time
Oxygen said to be 'paid back' by the oxidation of lactic acid after anaerobic respiration.
What is the process oxidation of lactic acid?The simplest process for lactate oxidation is:
lactate → pyruvate → acetyl CoA → Tri-Carboxylic Acid, oxphos, etc.
A route can take place for lactate taken up by the liver in the body. There it is converted to glucose via the process of gluconeogenesis, and glucose is released into the blood. Other tissues consume glucose and completely oxidize it to carbon dioxide (CO2) and water.
Lactic acid is an essential part of the human body. It helps in cell respiration, glucose production, and molecule signaling. Lactic acid does not cause muscle soreness.
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(c) Describe the relationship between the concentration of glucose in the culture medium and
the ATP concentration in the cells.
Answers
The details were missing but I managed to found from another source.
Answer:
According to the table attached, no correlation exists between the concentration of glucose in the culture medium and the ATP concentration in the cells.
Explanation:
The glucose is present at two concentration levels in the culture medium, i.e. 1.5 mM and 25 mM. There were three replicates of glucose concentration at different oxygen concentrations. Despite the same glucose concentration in the culture medium, the ATP concentration in the cell increased. This was observed at both concentrations of glucose. So, the presence of glucose might have been necessary for the ATP production but oxygen was playing a direct role in ATP production. To draw a better conclusion, more information on other parameters is necessary.
The concentration of glucose in a culture medium is directly proportional to ATP concentration in cells. More glucose in the medium leads to more ATP in cells, while less glucose in the medium leads to less ATP in cells.
Explanation:The relationship between the concentration of glucose in a culture medium and the ATP concentration in cells is directly proportional. Glucose is the primary source of energy for cells and is metabolized during cellular respiration to produce ATP, which is the main energy currency within the cell.
When the concentration of glucose in the culture medium increases, more glucose is available to the cells, leading to more glucose being used in cellular respiration. As a result, the production of ATP within cells also increases. Therefore, the ATP concentration in cells can be increased by increasing the glucose concentration in the culture medium.
Conversely, if the concentration of glucose in the culture medium is lowered, less glucose is available to the cells, thereby reducing the cellular production of ATP. So, the concentration of glucose in the culture medium directly affects the ATP concentration within the cells.
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What is the next step in the scientific method, following stating a question
Answers
Answer:
Scientific method
Starts with observation
Hypothesis
Experiment
Data analysis
Conclusion
Explanation:
Will give brainliest plz help
Answers
Answer:
Enzyme A - Flotase
Enzyme B - Zoomase
Enzyme C - Snotase
Enzyme D - Floxtase
Explanation:
This question is testing your knowledge of the pH scale. The information provided gives you information about what pH environments the enzymes work best in. We also have the information from the experiment showing the optimum pH.
Snotase works in neutral environments. A neutral environment is a pH of 7, which corresponds to enzyme C.
Flotase works in EXTREMELY acidic environments. The most acidic environment we have is for an optimal pH of 1, which corresponds to enzyme A.
Zoomase works in acidic environments, which corresponds to a pH of 3, the optimum for enzyme B.
Floxase works in basic environments, which are pH of more than 7, which is enzyme D.
A certain type of flower has two alleles for color (blue, purple), and two alleles for stem height (tall, short). A tall blue flower and a short purple flower are crossed, resulting in tall blue flowers, short blue flowers, tall purple flowers, and short purple flowers.
What law does this example demonstrate?
Answers
Answer:
Mendel's law of independent assortment
Explanation:
Gregor Mendel is a really important figure in genetics, his work on pea plants provided us with many of the fundamentals of genetics that we still have today!
Mendel proposed 3 laws:
1. The law of dominance - this law states that where there are two different alleles (heterozygous) the organism will always express the dominant trait over the recessive trait
2. The law of segregation - this law states that offspring will inherit one allele from each parent, because allele pairs separate in the process of meiosis, such that each gamete contains 1 allele of each trait. When the zygote is formed, it contains an allele from each parent.
3. The law of independent assortment - this law states that traits are independent from one another at the time of gamete formation. The genes are segregated separately from one another, as the presence of one does not impact the presence of another.
This example shows that all combinations of the height and color allele are possible, and therefore nicely demonstrates the law of independent assortment
Diagram how an animal zygote
becomes a gastrula.
Answers
Answer:
Zygote. Zygote, fertilized egg cell that results from the union of a female gamete (egg, or ovum) with a male gamete (sperm).
Explanation:
Formation of Gastrula. Once an egg is released from the ovary during ovulation, it meets with a sperm cell that was carried to it via the semen. These two gametes combine to form a zygote and this process is called fertilization. The zygote then begins to divide and becomes a blastula.
The process of embryonic development involves zygote formation, cleavage, and gastrulation, where three primary germ layers (ectoderm, mesoderm, endoderm) are established to give rise to various tissues and organs in animals.
Description of the process by which an animal zygote becomes a gastrula.
The process involves embryonic development and includes several stages:
1. Zygote Formation:
- Fertilization occurs when a sperm cell penetrates an egg cell, forming a zygote.
- The zygote is the initial diploid cell with a complete set of chromosomes.
2. Cleavage:
- The zygote undergoes rapid cell divisions through a process called cleavage.
- Cleavage results in the formation of a blastula, which is a hollow ball of cells.
3. Gastrulation:
- Gastrulation is the next major developmental stage after cleavage.
- The blastula undergoes a series of complex movements and differentiations to form three primary germ layers: ectoderm, mesoderm, and endoderm.
4. Formation of Germ Layers:
- Ectoderm: Outer layer, gives rise to the skin, nervous system, and other external structures.
- Mesoderm: Middle layer, gives rise to muscles, bones, circulatory system, and internal structures.
- Endoderm: Inner layer, gives rise to the digestive system, respiratory system, and other internal organs.
5. Gastrula Formation:
- As the three germ layers form, the structure is now called a gastrula.
- The gastrula has a three-layered structure with distinct regions that will develop into specific tissues and organs.
6. Neurulation (in chordates):
- In animals with a notochord, like vertebrates, a process called neurulation occurs.
- Neurulation involves the formation of the neural tube, which eventually develops into the brain and spinal cord.
The process of gastrulation is fundamental to the development of complex multicellular organisms, allowing for the specialization of cells into various tissues and organs.
Please HELP!!! Will mark as Brainlist!!! A loud sound means the sound wave has
a long wavelength
a high amplitude
a low frequency
a high frequency
Answers
The answer is a hight amplitude
the second choice
1) How is DNA condensed to form a chromosome?
2) What is the difference of mechanism genes and the DNA
segments between them?
3) What is the difference between a gene expression and the
genetic code?
(Will give brainliest if answered correctly) only need 1-3 sentences for each thank you!!
Answers
Answer:
Hello! Here are the answers:
Chromosomes are a highly condensed form of a combination of DNA and protein called chromatin. DNA strands (negatively charged) are tightly wound around these proteins called histones (positively charged) to form chromosomes.Mechanism genes code for for proteins that govern life processes. These genes or portions of DNA are called exons. DNA segments between these exons are called introns that strictly code for regulatory proteins and also contain genetic regulatory elements (DNA sequences that control gene expression).Gene expression is the process of translation of DNA sequences into proteins. The genetic code is the nucleotide sequence in the DNA itself that codes for different amino acids that combine together to form a functional protein.Explanation:
* 2. The intronic regions are misleadingly referred to as "junk DNA" but introns code for crucial regulatory elements that control gene expression.
* 3. The genetic code determines the sequence of amino acids in various proteins.
which of the following describes the relationship between population growth and the underground water supply?
A. as the population grows, the water supply remains the same, thus increasing its demand.
B. As the population grows, the water supply is increased due to modern technology.
C. As the population grows, the water supply grows proportionally because of the increased demand.
D. As the population grows, the water supply shrinks due to the increased demand.
Answers
D
Usually, with increased population growth, there is a direct increase in demand for resources such as water.
Explanation:
When the demand for water by the population overwhelms the supply from surface sources such as lakes and rivers, underground water is taped. Boreholes are sunk to reached water aquifers.
However, drawing underground water more than it is replenished by precipitation, lowers the water table. As a consequence deeper boreholes have to be sunk to reach more underground water. A critically lowered water table can result in drought in the region.
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Answer:
As the population grows, the water supply remains the same, thus increasing its demand.