Question

2. Why do humans mostly give birth to single baby at a time?
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Answer 1

Answer:

Explanation:

In human beings, female only develop one egg in one cycle, so it is a basic reason for only one child. Other than that human babies are very vulnerable and depends on the mother for years, so to promote the survival rates, one baby is born at a time

Answer 2

Explanation:

Beacuse female only developed on egg in one time but some time they develop two egg cause twins