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Author Question: With a budget of $200 million, the government can choose to purchase 4 helicopters or repair 200 km ... (Read 26 times) |
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
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Your heart beats over 36 million times a year.
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The average adult has about 21 square feet of skin.
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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
In 2009, historian Woody Holton described how Abigail Adams shrewdly invested in the Continental Con
A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan