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In the last 250 years, the amount of carbon in the air has increased by _____ percent. options: 10% 40% 80% stayed the same

In the last 250 years, the amount of carbon in the air has increased by _____ percent. options: 10% 40% 80% stayed the same
asked 80.4k views
4 votes
In the last 250 years, the amount of carbon in the air has increased by _____ percent.

options:

10%


40%


80%


stayed the same

asked
User Lawris
by
7.8k points

1 Answer

0 votes

40 percent is the answer

answered
User Tcarobruce
by
9.1k points
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