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

Responses

Earth warmed.
Earth warmed.

Earth cooled.
Earth cooled.

Volcanic activity decreased.
Volcanic activity decreased.

Volcanic activity increased.

1 answer

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.