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6. A substance that enters Earth's cycles and does harm to living things is A. oxygen. B. hydrogen. C. freshwater. D. a pollutant.
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6. A substance that enters Earth's cycles and does harm to living things is A. oxygen. B. hydrogen. C. freshwater. D. a pollutant.
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Jul 11, 2018
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6. A substance that enters Earth's cycles and does harm to living things is
A. oxygen.
B. hydrogen.
C. freshwater.
D. a pollutant.
Biology
high-school
Eric Kamara
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Eric Kamara
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C Pollutant just like emissions or oil spills
VirtualMichael
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Jul 15, 2018
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VirtualMichael
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