Question and answer
1. A substance that enters Earth's cycles and does harm to living things is A. a pollutant. B. oxygen. C. freshwater. D. hydrogen.
A substance that enters Earth's cycles and does harm to living things is a pollutant.
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Expert answered|Score 1|yumdrea|Points 42559|
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Asked 4/9/2018 9:17:36 PM
Updated 249 days ago|3/24/2020 2:23:10 PM
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Confirmed by Sting [3/24/2020 2:23:05 PM]
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