Final answer:
Photosynthesis is an interaction between the biosphere and atmosphere, where oxygen is released into the air as plants convert carbon dioxide, water, and sunlight into carbohydrates and atmospheric oxygen.
Step-by-step explanation:
The interaction between the biosphere and atmosphere is exhibited when a plant performs photosynthesis. In this process, oxygen gas is released into the air, marking the exchange of gases between living organisms and the Earth's gaseous envelope.
During photosynthesis, plants, which are part of the biosphere, take in carbon dioxide and water. Through this process, they convert light energy into chemical energy, stored in glucose or other carbohydrates. The by-product of this reaction is oxygen, which is released into the atmosphere. This is a prime example of how different spheres of the Earth system interact, specifically how the biosphere contributes to the atmospheric composition. The biosphere, essentially a life-supporting global ecosystem, influences and is influenced by the atmosphere, which is crucial for processes like weather and climate. Through the activity of photosynthesis, not only is oxygen produced but carbon dioxide is also taken up, which plays a critical role in the biological carbon cycle and Earth's climate regulation.