trees and kelp because trees take in the dirty oxygen and puts out the clean oxygen and the kelp i was researching kelp and i saw that kelp helps and makes oxygen.
Joseph Priestley experimented to show that plants make oxygen.
Water does not make oxygen in plants.
Plants make oxygen for us a living.
oxygen
oxygen
The y have to have carbon dioxide to make oxygen
They pollinate plants, and this is necessary to create new plants. The new plants create oxygen, so I would say yes. But, to be fair, they do it indirectly.
threw photosynthysis
OXYGEN
oxygen
Photosynthesis.
oxygen