Why are the differences in the skin, muscle, and body cells in the human body a biological advantage?

They are different layers that protect us...skin protects your muscles, and your muscles protect your cells

Explanation:

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the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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