How did the American pronghorn become the
world's second fastest land animal?

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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silt loam

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a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves