Trees
Oxygen is most commonly found in the air of Earths atmosphere.
The oxygen molecule, the form of oxygen found in the Earth's atmosphere, is 100% oxygen. There fore it is the material that has the most oxygen in it.
Oxygen.
Oxygen is most commonly found in trees and plants.
Nitrogen and Oxygen.
OXYGEN
The most abundant element found in the hydrosphere is oxygen. It is mainly present in water molecules (H2O) and dissolved oxygen.
oxygen
These elements are oxygen and magnesium.
The oxygen is mostly found in the troposphere. However most of the oxygen formed OZONE is found in stratosphere. It is due to the pressure of air there and the UV rays.
burning with insufficient oxygen........
Growing more trees as trees take in carbon dioxide and releases oxygen that we use for breathing. So. I guess Afforestation provides most of the oxygen found in the earths atmosphere.