Earth's secondary atmosphere contained a great deal of carbon dioxide, but its present atmosphere contains comparatively little. Where did this carbon dioxide go? Which of these statements does NOT explain what happened to a substantial fraction of this carbon dioxide?

Question

Quizplus · Accepted Answer

The majority of Earth's early carbon dioxide did not escape into space. Instead, it was absorbed by the oceans, became part of carbonate rocks, and was trapped underground in various forms, such as fossil fuels.

Earth's Secondary Atmosphere Contained a Great Deal of Carbon Dioxide