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The molecular formula for caffeine is cshion402. which of the following elements is not found in caffeine?
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If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?
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About 3% of the water on earth is freshest. only about 40% of that freshwater is available for human use. why is so much freshwater unavailable for human use?
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Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years
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Name 3 things that rainforest and deserts have in common...
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