Different cell structure between the two.Prokaryotic is just a cell while eukaryote has room to have the nucleus and other organelles.
Clouds reflect a large portion of the sun's energy, so if cloud cover declines, the amount of energy absorbed by land and oceans would increase, causing a temperature increase as well.
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Large amounts of ATP are generated when the body cells function with adequate oxygen. ATP molecules are the energy currency of the cells; cells derived the energy they need for their activities from the metabolism of ATP molecules. ATP need oxygen in order to function maximally.