The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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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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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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The average office desk has 400 times more bacteria on it than a toilet.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
Adapoids and omomyoids had longer snouts and are the first “true” primates.
The Sleep/Waking Flip-Flop According to Saper et al. (2001), the major sleep-promoting region (the v
Many older adults live active lives well into their eighties and beyond.
Mechanisms of active and passive immunity
Secondary Active Transport
A diagram showing one of Mendel’s crosses. True-breeding strains of pea plants with smooth and ...