What two macromolecules make up the plasma membrane?

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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population. population is the number of people or animals in a particular place. an example of population is over eight million people living in new york city.

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