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Biology, 31.07.2019 04:00 patrick171888
Every cell in the body requires oxygen for respiration so that sufficient energy can be produced. carbon dioxide, a waste product, is also produced and needs to be removed. therefore, the levels of both gases must be regulated. how does this explain the changes in your pulse rate?
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Every cell in the body requires oxygen for respiration so that sufficient energy can be produced. ca...
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