They produce pockets (eggs) for fertilization and they produce the reproductive hormones, oestrogen and progesterone.
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Moving air masses cause the weather to change when they contact different conditions. For example, a warm air mass moving over cold ground may cause an inversion. ... Cold air masses tend to move toward the Equator. Warm air masses tend to move toward the poles.
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observe, question, research, hypothesize, experiment, test hypothesize, draw conclusions, report
Phagocytosis is the process by which immune cells engulf and then destroy bacteria