Plants breathe with their leaves . Leaves have holes called stomata . Stomata take in carbon dioxide from the air. Plants breathe out oxygen. People and animals breathe in oxygen. We need plants to live.

In the picture you see CO2 and O2. CO2 means "carbon dioxide." O2 means "oxygen." 

 

 

 


http://evolution.berkeley.edu/evolibrary/images/interviews/stoma_diagram.gif