How did reduced methane concentrations in the atmosphere affect Earth?(1 point)

Question

Responses

Earth warmed.
Earth warmed.

Earth cooled.
Earth cooled.

Volcanic activity decreased.
Volcanic activity decreased.

Volcanic activity increased.

Answer 1

Reduced methane concentrations in the atmosphere generally lead to a cooling effect on Earth. Methane is a potent greenhouse gas, so lower levels of it would result in less heat being trapped in the atmosphere. Therefore, the correct response is:

Earth cooled.