If there was no carbon dioxide in the Earth's atmosphere, the temperature of Earth's surface would be :

Options

A. same as the present level
B. more than the present level
C. less than the present level
D. dependent on the oxygen content in the atmosphere

Answer

C

Explanation

If there was no `CO_(2)` in the earth's atmosphere, the temperature of the earth's surface would be less than the present level because `CO_(2)` has the property of trapping heat on earth surface.
Hence, `CO_(2)` as a greenhouse gas has made the earth habitable by maintaining the adequate amount of temperature on earth's surface.