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maxonik [38]
3 years ago
5

In the last 250 years, the amount of carbon in the air has increased by _____ percent.

Biology
2 answers:
Vadim26 [7]3 years ago
6 0

40 percent is the answer

KonstantinChe [14]3 years ago
5 0
40% is the correct answer
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Hello?? Can anyone help me??! PLEASE
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