Which of the following accurately compares CO2 levels during cold glacial periods and warm interglacial periods?

Question

Quizplus · Accepted Answer

During cold glacial periods, it's known that CO2 levels were lower than during warm interglacial periods. This is due to the fact that during cold periods, much of the Earth's water was frozen in glaciers, so less CO2 was able to be absorbed by the oceans, leading to lower atmospheric CO2 levels. In contrast, during warm interglacial periods, the oceans warmed and were able to absorb more CO2, leading to higher atmospheric CO2 levels.

Which of the Following Accurately Compares CO2 Levels During Cold