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Biology, 22.06.2019 01:20, sevaramirabell
Consider the model of the oxygen cycle on earth. the majority of earth's oxygen reservoirs are found in the a) atmosphere. b) biosphere. c) hydrosphere. d) lithosphere.
Answers: 1
Biology, 22.06.2019 04:30, Lindsay882
Why are scientists concerned about the depletion of the ozone levels in the stratosphere?
Answers: 2
1. What is one way that cellular respiration benefits plants and animal?
a. It adds carbon dioxide...
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