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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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How much heat is needed to raise the temperature of 5g of water by 16°c?
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What is the potential energy of a 5kg apple that is sitting on a 1.5m high tree branch...
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