Photosynthesis is the process that captures light energy and converts low-energy CO2 (carbon dioxide) into high-energy sugar molecules.

This process also requires H2O (water) and releases O2 (oxygen) as well as H2O.

The release of water from the stomata of plants is called transpiration.

Transpiration from plants may contribute to cloud formation; thus periods of rain may lead to a cyclical formation of more clouds due to increased photosynthesis.