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Over the last 200 years, global warming is inferred to be primarily caused by:

A. strong El Niño conditions
B. retreating glaciers
C. an increase in greenhouse gases
D. an increase in sea level


Sagot :

Final answer:

Global warming is caused by an increase in greenhouse gases from human activities, leading to significant climate changes.


Explanation:

Global warming is primarily caused by an increase in greenhouse gases emitted by human activities, such as burning fossil fuels. This leads to a greater greenhouse effect and subsequent warming of Earth's climate. The rise in temperatures contributes to various effects like melting glaciers, rising sea levels, and changes in weather patterns.


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