Question

Over the past 200 years the level of carbon dioxide in the atmosphere has
A. Decreased slightly
B.increased until recently, then decreased
C. Increased steadily
D. Stayed aboutbthe same

Answer 1

C. Increased steadily

Answer 2

Atmospheric carbon dioxides level increase steadily over past 200 years.

What is atmospheric carbon dioxides level?

"The atmospheric level of carbon dioxide has been steadily rising since the 1960's. In 2021, atmospheric carbon dioxide levels reached a high of 416.45 parts per million, in comparison to 1960 levels which stood at about 316.91 parts per million ."

to learn more about carbon dioxide levels here

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