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I need help with this question-example-1
User Redlab
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2 Answers

5 votes

Answer:

i think the top two are right

Step-by-step explanation:

User Scottwtang
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1 vote

Answer:

I know for a fact that Cellular Respiration releases carbon dioxide. I am guessing combustion (depending if natural or not) and volcanic eruption release carbon dioxide too.

User Timothy Clotworthy
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