Where are CO2 and O2 found in the biosphere?

CO2 (carbon dioxide) is primarily found in the atmosphere, where it plays a crucial role in the carbon cycle and photosynthesis, as well as being a greenhouse gas. It is also present in soil and water, where it can be dissolved and utilized by aquatic plants and microorganisms. O2 (oxygen) is predominantly found in the atmosphere, generated through photosynthesis by plants, algae, and cyanobacteria. Additionally, O2 is dissolved in water bodies, supporting aquatic life, and is also found in organic compounds within living organisms.