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Author Question: During the 1980s, damaging acid precipitation in North America largely fell A) on Canada and the ... (Read 25 times) |
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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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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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.