Hydrogen is 71% of the sun.
Nitrogen
trace gases.
I believe that all of them do.
anything that is not in the periodic table probably contains more than one kind element. steel, plastic, rubber are all examples
Aluminum is the most abundant metallic element on Earth. It makes up more than eight percent of the earth's crust. Though, it is never free in nature. It combines with oxygen, sand, iron and titanium, and its ores are mainly bauxites.
helium
Nitrogen
It is nitrogen and it makes more than 78% of the air.
hydrogen
It is Neon!
Because it has more than one element and more than one element mixed together makes a compound
water
china
Uranium is a chemical element, not a compound.
Protein
Bacteria.
Protein