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Is the following sentence true or false? the composition of the atmosphere changes every few kilometers as you move away from earth.
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The negative impacts of nonnative species generally outweigh the positive impacts
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Pacemakers maintain the heartbeat in people who suffer from certain defects. the function of an artificial pace is to send electrical impulses that will contract the heart muscles and regulate the pumping of the heart. which condition could be corrected by a pacemaker?
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Is the following sentence true or false? the composition of the atmosphere changes every few kilome...
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