Yes; this occurs when an organism has a varied diet. Humans are an example of this: When eating plants, we are on one trophic level; and, when eating meats, we are on another.
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The answer is A
no its really just A like the first answer
man its hard to explain stuff
Answer: A. Nitrogen
Explanation: Nucleic acids contain the same elements as proteins: carbon, hydrogen, oxygen, nitrogen; plus phosphorous (C, H, O, N, and P). Nucleic acids are very large macromolecules composed of repetitive units of the same building blocks, nucleotides, similar to a pearl necklace made of many pearls.
Answer:
D is incorrect. Took the quiz. The most acceptable answer is either A or C
