Asubstance that enters earth's cycles and does harm to living things is
a. oxygen.
b. fr...
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Biology, 07.10.2019 13:00 DesireeGuzman5213
Asubstance that enters earth's cycles and does harm to living things is
a. oxygen.
b. freshwater.
c. a pollutant.
d. hydrogen.
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Answers: 1
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