Question

greenhouse gases include carbon dioxide and methane. how do greenhouse gases act to increase air temperatures near earths surface?
a. they transmit visible light that enters the atmosphere.
b. they trap heat that is radiated from the surface.
c. they reflect heat that enters the atmosphere.
d. they emit heat when they undergo chemical reactions.

Explanation:

Greenhouse gases like carbon - dioxide and methane are transparent to incoming visible light from the sun. But they absorb and trap the infrared radiation (heat) radiated from the Earth's surface, leading to an increase in near - surface air temperatures.

Answer:

B. They trap heat that is radiated from the surface.