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Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from
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Use examples from the article to explain one positive and one negative effect that chemistry has had on society.
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Scientists discovered fossils in several layers of the earth you see here. they found fossils of algae, snails, and clams in layer d. given that information, where do you think they found fossil evidence of simple land plants and amphibians?
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Is granite a compound...
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