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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Women are 50% to 75% more likely than men to experience an adverse drug reaction.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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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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About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.