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What are the two ost important processes in the oxygen in and out of the atmospher
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What are the two ost important processes in the oxygen in and out of the atmospher

User Edy Aguirre
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Photosynthesis and respiration
User NeverBe
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Decomposing - When plants and animals die, they decompose. This process uses up oxygen and releases carbon dioxide. Rusting - This is also called oxidation. When things rust they use up oxygen.

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User Colin Grogan
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