Answer:
a exothermic;endothermic
Explanation:
learned that in sience class yesterday
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Answer: All members of Animalia are multicellular, and all are heterotrophs (that is, they rely directly or indirectly on other organisms for their nourishment). Most ingest food and digest it in an internal cavity. Animal cells lack the rigid cell walls that characterize plant cells.
A molecule is two or more atoms held together by chemical bonds.
