<span>Enzymes cut introns out of an mRNA strand.</span>
Answer:
There wouldn't be enough surface area for the electron transport chain.
Answer: Option A) Oxygen may not have been able to accumulate in the atmosphere
Explanation:
Ozone, O3, is an allotrope of oxygen having three atoms in the molecule instead of the usual two present in molecular oxygen. Ozone is generated from oxygen, and is the only form in which oxygen can exist in the atmosphere.
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Answer:
B
Explanation:
your answer is chlorophyll 100% positive