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Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?
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Geothermal energy for industrial use is available almost anywhere. a.true b.false
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Scientists often deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 Ă— 10-4 millimeters. express each of these numbers in an alternate form.
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8. The relative abundance and atomic masses are 69.2% for copper-63 and 30.8% for copper-65. Calcula...
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