Newton’s law of universal gravitation states that every object in the universe attracts every other object. t of f

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Newton’s law of universal gravitation is a general physical law that was created by Isaac Newton. Newton's law of universal gravitation states that every object in the universe attracts every other object by a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

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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