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Which of the following is true regarding the concentration of CO2 in the lower atmosphere?

kendreae

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Which of the following is true regarding the concentration of CO2 in the lower atmosphere?

Which of the following is true regarding the concentration of CO2 in the lower atmosphere?
A) It is 1/3 higher than it was 1750..
B) It has stabilized.
C) It is presently at 150 ppm.
D) It is unrelated to the amount of forest cover.

Textbook

Geosystems: An Introduction to Physical Geography

Geosystems: An Introduction to Physical Geography

Edition: 7^th

Author: Christopherson

Read 88 times

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One touch of nature makes the whole world kin. William Shakespeare

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kendreae Author

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