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Gwar [14]
3 years ago
9

It is NOT required in a chemical reaction.

Biology
1 answer:
zubka84 [21]3 years ago
6 0
I believe the correct answer from the choices listed above is option C. It is the products that is not requires in a chemical reaction. These are the substances that is being produced from the reactants involved in the system which needs the atomic nuclei and energy.
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Explanation:

The chart given explains how the camels are evolved between Eocene (33 myo) and Pleistocene.

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