A good example of something that is biodegradable is __________.
a leaf in a compost pile
a plastic milk jug in a landfill
a plastic six-pack can holder in an estuary
a polystyrene burger container in a trash can
Why must organisms of the estuary be adapted to varying levels of salinity? A.Fresh river water flows into the estuary
B.Saline ocean water flows into the estuary
C.Ocean tides increase and decrease the amount of ocean water
D.All of the above
Organisms in estuaries must adapt to varying levels of salinity due to the unique environment where fresh river water and saline ocean water meet, creating varying and changing salinity levels. Fresh river water, saline ocean water, and ocean tides all contribute to these salinity changes.So, the correct answer is D. All of the above.
Explanation:Organisms in the estuary must be adapted to varying levels of salinity because of the unique factors of their environment. The estuary is a transitional zone where fresh river water meets marine or saline ocean water. This creates varying levels of salinity, which can even change with the tides. Therefore, organisms living there have to adapt to this ever-changing salinity environment.
This happens because of a combination of the factors mentioned in options A, B, and C. Fresh river water from inland sources flows into the estuary (option A), increasing the freshwater content. On the other hand, saline ocean water also flows in (option B), increasing the salinity. Furthermore, the rise and fall of ocean tides can increase and decrease the amount of saline water entering the estuary (option C). So, the correct answer is D. All of the above.
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What does it mean if a scientist fails to reject a hypothesis?
If matter cannot be created or destroyed within the physical universe, then the total quantity must be _____????????
which research question about the largemouth bass and whirligig beetle would best match the scientists' observations?
a.how log do fish spend rinsing their food?
b.what is the favorite food of a larrgemouth bass?
c.which insects produce the most foul-tasting substances?
d.does the slow release of a foul-tasting substance increase survival?
Competition occurs between species when _____.
they fight for mates
their niche is destroyed
they try to share the same niche
a new niche becomes available
Answer: The correct answer for the fill in the blank is- They try to share the same niche.
According to competitive exclusion principle, two species when present in the same area, try to compete for the same limiting resource like food. The species having better advantageous trait over the other survive and exclude the other one. In other words, the second species is either eliminated or shifts to some other niche.
This principle is also called Gause's principle.
Thus, competition occurs between two species when they try to share the same niche.
Answer:
they try to share the same niche
Explanation:
The weather department in Richmond is forecasting a snowstorm. What is likely to happen to the barometer and thermometer readings in Richmond?
A. Barometer readings will decrease, and thermometer readings will increase.
B. Barometer and thermometer readings will increase.
C. Barometer and thermometer readings will decrease.
D. Barometer readings will increase, and thermometer readings will decrease.
E. Barometer and thermometer readings will not change.
The correct answer is option D. Barometer readings will increase, and thermometer readings will decrease.
The barometers are the devices, which are used for the measurement of the pressure and the thermometer is a device, which is used for the measurement of the temperature. During snowstorm, the temperate is decreased and the pressure is high. So, the reading on the thermometer would decreased, and the reading on the barometer would be increased.
Answer:
D.
Explanation:
if a codon in RNA was GAC, what would it's copy be?
Characteristics we use to tell the difference between kinds of matter are called ____________ properties.
The blank would be physical
hope this helps have a great day
A shark's skeleton is different from a goldfish because
a. the shark's skeleton is very dense.
b. the shark's skeleton is quite rigid.
c. the shark's skeleton is composed of bone.
d. the shark's skeleton is composed of cartilage.
The element hydrogen has three naturally occurring isotopes, H-1, H-2, H-3. What is the number of protons, neutrons, and electrons in H-3, or tritium?
Answer:
Tritium is one of the three isotopes of hydrogen which contains 1 proton, 2 neutrons, and 1 electron. Out of three isotopes, protium is the most abundant isotopic form of hydrogen constituting about 99.98 % of total isotopic form.
Tritium is a radioactive isotope of hydrogen having a half-life period of 12.3 years which is produced as a byproduct of fission in a nuclear explosion. Naturally, it occurs in a very trace amount.
It emits the beta particle which is having very low energy so cannot penetrate the skin but can be hazardous if inhaled or get absorbed in the skin.
What disease causes an imbalance of the blood glucose levels
Create a sentence explaining how amino acids form proteins
Amino acids are monomers that combine to form polymers called proteins.
Which of the following is an indicator of good water quality?
High levels of nitrates
High levels of phosphates
All of the above
Zero turbidity
I would think that it is B. Nitrates can be a form of pollution and D is usually from the speed of the water moving.
Answer:d
Explanation:took test
Which of these processes is used to break down glucose into ATP that is usable by the cell?
A) chemosynthesis
B) photosynthesis
C) respiration
D) transpiration
Fish, trees, and animals are important wildlife resources that we depend on for survival. Fish are a main source of food for many of the people in the world. Trees have been used to build and heat homes, make paper, and provide food for centuries. Humans hunt land animals such as deer, fox, antelope, and buffalo for food and other products. What can we do to protect wildlife resources so they will be around for future generations?
Answer:
harvest fast-growing trees, impose fishing limits, and impose laws to prevent poaching and illegal hunting
Explanation:
i got it right
2. Which organelle acts like the “brain” or control center of the cell?
The animals in the food web release _____ into the enviroment , which plants then use for ______ ?
Cells of a multicellular organism are specialized. What does this statement mean?
A.
Cells of a multicellular organism can perform all the life functions the organism needs to survive.
B.
Cells of a multicellular organism perform all life functions but not at the same time.
C.
Cells of a multicellular organism are adapted for performing a specific function.
D.
Cells of a multicellular organism are specialized because they have a complex structure.
Which of these is not a component of the cell membrane? question 19 answers phospholipids rna cholesterol proteins?
Because of when the chromosomes pair up during meiosis, crossing-over must occur during
Explain why molecules held together by covalent bonds don't have electrical charges
Electrons are excited in photosystem I. With what do these electrons combine to produce an energy-carrying molecule?
A.ADP
B.Glucose
C.ATP
D.NADP+
A biologist observes that ocean temperature decreases with increasing depth and concludes that deep sea creatures are superior animals because they can survive in harsher environmental conditions. Why is this an invalid scientific conclusion?
A. The data was not compared among several sampling sites.
B. The data did not specify the measurement system used.
C. Scientific data cannot be used to make judgments of organism superiority.
D. Scientific data cannot be used to measure temperatures that are inaccessible to humans.
Transcribe the following DNA to RNA
DNA A G T C C T A T G A C C
mRNA ___________________________________
Chemical reactions that release energy are______________________
For a given species, an increased evolutionary rate would cause a decrease in A) biodiversity. B) fitness of a species. C) similarity of the individuals in the species. D) the number of new genes in the DNA of the species.
Answer: C) similarity of the individuals in the species
Explanation: Similarity of the individuals in the species. It would be expected that increased evolutionary rate would cause individuals in the species to resemble each other less.
Imagine that a chromosome contains the following chromosome order ZYXWVUT. What type of mutation happens to produce ZYXWWVVUT?
The pictures below show a cave and a geyser.
Which of these statements is correct about the cave and geyser shown in the pictures?
a. Both are formed when groundwater gets heated.
b. Both are formed when groundwater reacts with the limestone in rocks.
c. The cave is formed when groundwater reacts with the limestone in rocks and the geyser is formed when groundwater gets heated.
d. The cave is formed when groundwater gets heated and the geyser is formed when groundwater reacts with the limestone in rocks.
Answer:
c
Explanation:
Why did Gregor Mendel conclude that the genes for flower and seed color in pea plants independently assorted even though both traits are on the same chromosome?
Crossing over occurred frequently.
The genes are not considered linked.
The genes are very far apart on the chromosome.
All of the above are correct.