Answer:
2. The rate of cell division is related to a cell types function.
Explanation:
It depends on how it turns from stem cells into a tasked-cell, whether it remains a stem, cardiovascular muscle, and other areas.
after the evolution of the first living cells, fermentation wasn't needed, because aerobic respiration was now doable, since there was more oxygen in the air now. also, as the temperature increases, it becomes more energy consuming to conduct fermentation over aerobic respiration.
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Since it takes about 7-9 months for a baby to come out it would be 7-9 months