Hydrogen is commonly found in water, but not as a pure substance.
It is found as Oxygen Gas (O2). This is about 1/4 of the earth's atmosphere (air).
Calcium is commonly found in milk and milk products
Iron Oxide (Fe2O3) can be found on any surface where raw Iron metal is exposed to Oxygen gas. It is commonly known as rust.
Nickel is reactive enough with oxygen that native nickel is rare on Earth's surface, being mostly confined to the interiors of larger nickel-iron meteorites that were protected from oxidation during their time in space.
In the Earth's atmosphere
Oxygen is most commonly found in the air of Earths atmosphere.
Oxygen is most commonly found in trees and plants.
Oxygen is found in the air that we breathe, roughly 21% of our atmosphere is Oxygen.
In the element oxygen.
It is not. CO2 is more common on earth than O2 aswell as Hydrogen. In space its even less common.
Coal is most commonly found under the earth in coal mines.Coal is most commonly found under the earth in coal mines.coal is located mostly onder the plains
The two elements that commonly occur within the earth crust are Oxygen and Silicon.
its nitrogen water and oxygen.
burning with insufficient oxygen........
in an element
hydrogen is most commonly found as a part of water with oxygen.