Each of the following is a stage in the runaway icehouse effect believed to have operated on Mars in the past EXCEPT one. Which is NOT?
A)Rain and snow wash carbon dioxide out of the atmosphere.
B)The efficiency of the greenhouse effect changes.
C)The planet becomes warmer, allowing more carbon dioxide to escape into space.
D)The planet becomes cooler, allowing for more rain.

Question

Quizplus · Accepted Answer

The runaway icehouse effect involves a planet cooling down, not warming up. The process described in option C, where the planet becomes warmer allowing more carbon dioxide to escape into space, is contrary to the cooling trend of an icehouse effect.

Each of the Following Is a Stage in the Runaway