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faltersainse [42]
3 years ago
8

Ellen is jogging. As her body's metabolism becomes more active, carbon dioxide levels increase, resulting in a decrease in pH. F

ortunately, her ___________ in the blood protect against large changes in pH.
Biology
1 answer:
DedPeter [7]3 years ago
5 0
Immune system becuase ur immune system helps get rid of sickneess

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