Which of the following statements accurately describes the change in CO2 in the atmosphere since the turn of this century?
A) CO2 has increased in the first half of the century, and decreased in the last half
B) CO2 has remained at about the same concentration from year to year
C) CO2 has been steadily increasing in concentration
D) CO2 has been steadily decreasing in concentration
Correct Answer:
Verified
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