The biosphere includes mammals, fishes, and birds.
Molting occurs in all animals with exoskeletons, due to the fact that such animals cannot grow bigger than their shell without replacing their shell with a bigger one. That is the general idea
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Continental drift is the process whereby tectonic plates move along the surface of the earth. This is caused by convection in the lithosphere and asthenosphere.
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Astronauts must have oxygen, food, water, and rest. As for the robots they don't need that
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