An important long-term factor determining whether glacial ice will form on the continents has likely been the proportion of which gas in the atmosphere?

Question

Quizplus · Accepted Answer

The proportion of carbon dioxide in the atmosphere is an important factor in determining whether glacial ice will form on the continents. Higher levels of carbon dioxide trap more heat, preventing the cooling necessary for the formation of glacial ice. However, over long periods of time, the weathering of rocks removes carbon dioxide from the atmosphere, leading to cooler temperatures and the potential for glacial ice formation.

An Important Long-Term Factor Determining Whether Glacial Ice Will Form