It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
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Illicit drug use costs the United States approximately $181 billion every year.
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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
The phosphorus cycle.
The Calvin cycle.
Finding the angle from a ratio (Part 1)
Some of the common structural abnormalities seen in chromosomes. (a) In a deletion, part of a chromo