Metabolism is the chemical process that occur within a living organism in order to maintain life.
The answer is "because water is produced as a by-product"...the word dehydration should also be a major clue because that means water loss.
The correct answer is meiosis. This is because a zygote is a 2n diploid cell caused by human fertilization witch is meiosis. This shows that the correct answer is meiosis. There are two things needed witch are the two gametes. These two gametes are called the egg(female) and the sperm(male).
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