Answer:
C. Protein
Explanation:
Proteins contain C, H, O, and N.
Most notably, they contain an R group (aka a side chain), which is different for each for amino acid. The R group is symbolized by the letter R in the image.
The steeper the slope of the track the quicker the toy car will accelerate.
The best and most correct answer among the choices provided by your question is The best and most correct answer among the choices provided by your question is the last choice.
<span>
Kingdom Protista is not valid under evolutionary classification because they evolved before any other kingdom, and as such share a most recent common ancestor with each other, as opposed to any other group.</span>
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Answer:
D
Explanation:
Improve desirable traits and help determine the heritability of a trait.
Both use oxygen, both produce energy, both give out carbon dioxide as the result and the overall chemical reactions are the same.
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