I believe that the answer is D. If something has evolved, it can not interbreed with its old species. I think this is right!
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Answer:
C
Explanation:
The principle of superposition states that the oldest sedimentary rock units are at the bottom, and the youngest are at the top. Based on this, layer C is oldest, followed by B and A. So the full sequence of events is as follows: Layer C formed.
C. Enzymes increase the rate of the chemical reactions carried out during metabolism.
Instructions for an inherited traits are called genes.