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Author Question: A(n) ________ is used as a placeholder for an unknown part of a value or to match a certain pattern ... (Read 26 times) |
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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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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.
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There are 20 feet of blood vessels in each square inch of human skin.
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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."