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Why do people and animals need to breathe? A biologist explains why you need a constant source of oxygen

  • Written by Christina S. Baer, Assistant Professor of Biological Sciences, Binghamton University, State University of New York
Why do people and animals need to breathe? A biologist explains why you need a constant source of oxygenYour blood's natural limit to how much oxygen it can hold means you can't stockpile it.Lisa520/E+ via Getty ImagesWhy do people and animals need to breathe? A biologist explains why you need a constant source of oxygen

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Why do humans and animals have to breathe? – Tennessee, age 7, Hartford,...

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