Answer: more of the earth's water was frozen
Explanation:
Answer:
d) descent with modification
Explanation:
According to my research on Darwin's theory of natural selection, I can say that based on the information provided within the question the term being described is called descent with modification. This basically refers to the most dominant traits being passed down from generation to generation, and being modified little by little in each lineage. Which is done through natural selection.
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Answer:
Biotic: <em>Food availability</em>
Abiotic: <em>Temperature</em>
Explanation:
There are two types of limiting factors for biodiversity: biotic and abiotic. Biotic refers to living things, for example, organisms that are an important food source. <u>Most animal life forms in the ocean highly depend on the availability of a food source</u>. If food is limited or scarce, the populations of a given species could face significant declines.
On the other hand, there are abiotic factors, which refer to factors that are not alive, such as physical factors. For instance, temperature and light. <u>For marine organisms, temperature is a critical factor.</u> Even an increase of 'only' 1 ºC could make a huge difference in the survival of a species as it could disrupt their ability to forage, hunt, or perform physiological processes, <em>e.g.</em> metabolism.
Therefore, <u>if we refer to a biotic factor, food availability is a limiting factor for most animal life in the open ocean, whereas, if the refer to an abiotic factor, temperature (and light) are limiting factors for pelagic life.</u>
Answer:
Human cells can readily absorb folic acid; bacteria cells cannot.
Explanation:
Bacterial cells cannot absorb folic acid and synthesize it. On the other hand, humans do not synthesize folic acid in their cells. They rather obtain it from the diet. Sulfa drugs, for example, sulfanilamide resemble p-aminobenzoate (PABA). PABA is a molecule that is used as a substrate in the synthesis of the coenzyme folic acid. The sulfa drugs serve as competitive inhibitors and compete with PABA for the catalytic site of an enzyme involved in the folic acid synthesis. This prevents the synthesis of folic acid in bacterial cells and thereby, inhibits bacterial growth.
C. Because most plants have prokaryotes
