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By how much did carbon dioxide levels increase from 1980 to 2000? 22 ppm 32 ppm 45 ppm 51 ppm
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4 votes
By how much did carbon dioxide levels increase from 1980 to 2000?

22 ppm

32 ppm

45 ppm

51 ppm

User Petem
by
8.4k points

2 Answers

2 votes

Answer:

B. 32ppm

Step-by-step explanation:

User Salman Lone
by
7.8k points
6 votes
the answer is 32 ppm

User Muhammad Omer Aslam
by
8.1k points
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