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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
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The FDA recognizes 118 routes of administration.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.