asked 54.6k views
5 votes
Wich is not a source of carbon dioxide gas?

A) humans
B) factories
C) machines
D) plants

2 Answers

6 votes
The answer is C) machines.
answered
User Hugh Hou
by
8.5k points
3 votes
D. PLANTS is your answer.
answered
User RobinAugy
by
8.3k points

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