What substance naturally found in the atmosphere seems to be increasing in concentration over the years?

Name: What substance naturally found in the atmosphere seems to be increasing in concentration over the years?
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Question

Quizplus · Accepted Answer

Carbon dioxide levels in the atmosphere have been steadily rising over the years due to human activities such as burning fossil fuels and deforestation. This increase is a major contributor to climate change.

What Substance Naturally Found in the Atmosphere Seems to Be