Cells grow during both Gap 1 and 2, but since we've to choose a proper answer, I'd go for A, the G1 checkpoint, the first one.
An essential nutrient<span> is a </span>nutrient<span> that the body cannot synthesize on its own -- or not to an adequate amount -- and must be provided by the diet. These</span>nutrients<span> are necessary for the body to function properly. On the other the non-essential ones cannot be made inside the body so they are acquired from the food we eat.</span>
<span>because the molcules are formed................................... have a nice day
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Explanation:
Biosphere. It is the highest level of organization. It is the global ecological system which consists of all the living organisms and other factors which supports life.
