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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Statement D best describes the difference between the way plants and animals obtain energy.
Fragmentation is the breaking of the body into parts and then the organism develops all the parts of the body. The fragmentation is the type of reproduction in lower organisms. The fragments which are produced can develop into new organisms.
11)B 12)D 13)D 14)A 15)D 16)A 17)A 18)B 19)A 20)B 21)B 22)C