Is There Less Oxygen in the Winter Since Its Colder

The video explains the importance of photosynthesis in oxygen production, highlighting the roles of trees and phytoplankton. It discusses seasonal variations in photosynthesis, particularly during winter, and how these affect oxygen levels. The video also covers how scientists measure these changes and concludes that despite seasonal variations, oxygen levels remain stable due to the contributions of both land plants and oceanic phytoplankton.

What percentage of the air we breathe is oxygen, and how stable is this amount?

Explain the seasonal variation of oxygen levels in the northern and southern hemispheres.