Photosynthesis and respiration were the main causes of fluctuations in atmospheric CO₂ levels over the last 500 million years.

Question

Quizplus · Accepted Answer

Photosynthesis and respiration are important biological processes that affect carbon dioxide levels, but the main causes of fluctuations in atmospheric CO2 levels over the last 500 million years include geological processes (such as volcanic activity and the formation and weathering of mountain ranges), variations in solar radiation, changes in the Earth's orbit, and the evolution of life on Earth, which have all played significant roles in shaping the Earth's climate and atmospheric composition.

Photosynthesis and Respiration Were the Main Causes of Fluctuations in Atmospheric