Explain how the situation described in the article shows that outside environment can help and hurt cell

Cells may be self-sustaining units of life, but they do not exist in isolation from the rest of the organism. A vital component of their existence is their capacity to receive and digest information from their external environment, whether that information refers to the availability of nutrients, changes in temperature, or differences in light levels.

Explanation:

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they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b

sex cells are usually half's then they find another half and make a fertilize egg