Animals need to consume food in order to obtain energy (just like humans.
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Thus, during the Citric Acid cycle, the breakdown of glucose into carbon dioxide is completed. There are four redox reactions, three of which yield reduced NADH and one FADH2. Thus, the oxidation of glucose is completed in the Kreb's cycle
Answer:
I believe the answer is A "There is an interaction between environment and gene expression."
Explanation: