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

By how much did carbon dioxide levels increase from 1980 to 2000? 22 ppm 32 ppm 45 ppm 51 ppm
asked 178k views
4 votes
By how much did carbon dioxide levels increase from 1980 to 2000?

22 ppm

32 ppm

45 ppm

51 ppm

asked
User Petem
by
8.4k points

2 Answers

2 votes

Answer:

B. 32ppm

Step-by-step explanation:

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

answered
User Muhammad Omer Aslam
by
8.1k points
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