Q.

What do you understand by greenhouse effect?

A. Increase in temperature due to increase in O2 concentration of the atmosphere
B. Decrease in temperature due to decrease in O2 concentration of the atmosphere
C. Increase in temperature due to increase in CO2 concentration of the atmosphere
D. Decrease in temperature due to decrease in CO2 concentration of the atmosphere
Answer» C. Increase in temperature due to increase in CO2 concentration of the atmosphere
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