Carbon dioxide concentrations in the Northern hemisphere fall from spring through autumn as carbon is taken up in growing plants, and rise through the winter as organic matter decays.

Question

Quizplus · Accepted Answer

This statement is correct. During spring and summer in the Northern hemisphere, the concentration of carbon dioxide in the atmosphere decreases as plants take up carbon through photosynthesis. During winter, the concentration increases as plants go dormant and decay, releasing carbon dioxide. This seasonal pattern is known as the carbon dioxide cycle.

Carbon Dioxide Concentrations in the Northern Hemisphere Fall from Spring