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arealhero arealhero
wrote...
Posts: 7874
9 years ago
Animals breathe in air containing oxygen and breathe out air with less oxygen and more carbon dioxide. The carbon dioxide comes from
a. hydrocarbons and the air.
b. the citric acid cycle.
c. glycolysis.
d. waste products.
e. All of the above
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Answer accepted by topic starter
milestone23milestone23
wrote...
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Posts: 9919
9 years ago
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arealhero Author
wrote...
9 years ago
This is perfect, thank you for the answer.
wrote...
9 years ago
Great!
Retired master
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