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What is the oxygen used for?

User Uri
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It plays a critical role in respiration, the energy-producing chemistry that drives the metabolisms of most living things.
User Jenya
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Answer:

The energy-producing process that powers the metabolisms of most living organisms, respiration, depends heavily on oxygen. All living things, including humans, depend on oxygen in the air we breathe to survive

Step-by-step explanation:

User Ruman
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