5
QuizMultiple Choice

Air Resources — Quiz

Question 5 • Earth and Space Science

What general trend is shown in the graph of atmospheric CO₂ concentrations from 1958 to 2024?

Answer
A
CO₂ levels have decreased steadily.
B
CO₂ levels have remained constant.
C
CO₂ levels have fluctuated without a clear trend.
D
CO₂ levels have increased steadily over time.

Explanation

Atmospheric CO₂ concentrations have risen over the period from 1958 to 2024. Although the measurements vary seasonally, the overall trend is upward, so CO₂ levels have increased steadily over time.

AI-written and checked against the verified answer.

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