What causes Seismic Waves? -Release of energy along a fault
-Tsunami waves hitting the shore
-Seismograph Stations
-Hurricanes

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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c is the answer to this question. altitude affects the weather because air molecules evaporate.