"one negative consequence of using an insecticide is that it
(1)selects for insecticide-resist...
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The earth formed roughly 4.5 billion years ago, yet evidence of life dates back to about 3.5 billion years ago. which one is not a possible hypothesis of how life on earth arose?
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How many neutrons does element x have if its atomic number is 29 and its mass number is 86?
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