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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The average adult has about 21 square feet of skin.
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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.
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There are 20 feet of blood vessels in each square inch of human skin.
Examples of gated ion channels.
Examples of Late Effects of Surgery Among Adult Cancer Survivors
Examples of Endocrine Disorders Associated with Hyper- and Hyposecretion
Examples of Mathematical Equivalents
A typical battery-powered 3/8 inch drive impact wrench.