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Prior to the Industrial Revolution,what Was the Level of Atmospheric

Question 1

Multiple Choice

Prior to the Industrial Revolution,what was the level of atmospheric carbon dioxide,and what is the current level?


A) Below 265 ppm pre Industrial Revolution; 200 ppm in 2014
B) Below 200 ppm pre Industrial Revolution; 4,000 ppm in 2014
C) Below 265 pre Industrial Revolution; 398 ppm in 2014
D) Below 200 ppm pre Industrial Revolution; 30,000 ppm in 2014

Correct Answer:

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