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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.
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Biology, 22.06.2019 02:30, catycait27p5rc5p
What were the main components of earth’s earliest atmosphere? oxygen and ammonia hydrogen and helium oxygen and nitrogen hydrogen and nitrogen
Answers: 1
Data from the sequence of amino acids in proteins are used to infer how living things are related th...
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