Question

which interaction contributes to the greenhouse effect?
gases in the atmosphere absorb heat.
dust particles scatter and reflect light from the sun.
green visible light is trapped in earths atmosphere.
light travels through a thick part of the atmosphere at sunrise and sunset

Explanation:

The greenhouse effect occurs when greenhouse gases (such as carbon dioxide, methane) in the atmosphere absorb heat (infra - red radiation) emitted from the Earth's surface and re - emit it back towards the Earth. Dust particles scattering and reflecting sunlight would have a cooling effect (like in the case of volcanic eruptions). Green visible light is not the key factor in the greenhouse effect; it is the absorption of longer - wavelength (infra - red) radiation. The fact that light travels through a thick part of the atmosphere at sunrise and sunset is related to the path length of light through the atmosphere for scattering (which causes the red color of sunsets) but not to the greenhouse effect.

Answer:

Gases in the atmosphere absorb heat.