Which two factors are critical to the existence of the carbon dioxide (CO₂) cycle on Earth?

Question

Quizplus · Accepted Answer

Plate tectonics are critical to the existence of the carbon dioxide cycle because they provide a way for carbon dioxide to be released from the Earth's interior through volcanic activity. Liquid water oceans are also critical because they provide a place for carbon dioxide to be absorbed through the process of dissolution. Together, these factors allow for the continuous cycling of carbon dioxide between the atmosphere, the oceans, and the Earth's interior. Life is not a critical factor in the carbon dioxide cycle, although it does play a role in some of the processes that are part of the cycle. Atmospheric oxygen, active volcanism, and active tectonics are also not critical factors in the carbon dioxide cycle.

Which Two Factors Are Critical to the Existence of the Carbon