ozone
Oxygen is the most common element in the crust.
Oxygen is the most common element in Earth's atmosphere after nitrogen.
Hydrogen is the most common element in the universe, not oxygen.Oxygen is the most common element on Earth, followed by silicone.
hydrogen and oxygen
Oxygen.
In the crust on which we live, oxygen is the most common element. In the Earth as a whole, iron is the most common element.
oxygen H2O
silicon
Nitrogen, oxygen, argon
nitrogen
Oxygen.
The main element in the atmosphere is Nitrogen. The second is Oxygen.