express10 express10

30-10-2017
Biology

contestada

By how much did carbon dioxide levels increase from 1980 to 2000?

22 ppm

32 ppm

45 ppm

51 ppm

Respuesta :

machaela420 machaela420

30-10-2017

the answer is 32 ppm

Answer Link

adpham0807 adpham0807

01-04-2021

Answer:

B. 32ppm

Explanation:

Answer Link

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