<span>Aerobic cellular respiration uses oxygen and yields many more ATP molecules than anaerobic cellular respiration, which does not use oxygen and yields only 2 ATP molecules. There are three stages in the process of transforming glucose to ATP: glycolysis, the citric acid cycle, and the electron transport chain.</span><span>
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The menstrual<span> cycle </span>occurs<span> due to the rise and fall of hormones</span>
A seems most likely, check with others if u have the time
