How can we convert CO2 to oxygen to help combat climate change?

One way to convert CO2 to oxygen to combat climate change is through the process of photosynthesis. Plants and trees absorb CO2 during photosynthesis and release oxygen as a byproduct. Increasing the number of trees and plants through reforestation and afforestation efforts can help remove CO2 from the atmosphere and increase oxygen levels. Additionally, technologies such as carbon capture and storage can also be used to capture CO2 emissions from industrial sources and store them underground, preventing them from entering the atmosphere.