Archean and Proterozonic which are both broken into early middle and late periods
The condition of being physically fit and active
Well, different organisms require different things. A single celled bacteria does not need a lot at all compared to a plant or animal. One cell can support a bacrerium. An animal needs many cells to carry out the functions necessary for it to live.
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Answer:D
Explanation:Mantle convection currents cause plate movement