The earths atmosphere is made up of 78% nitrogen and 21% oxygen
The core is 33% of the Earths mass
The mantle.
A: glass and rare earths
30layers
nitrogen and oxygen
Water 75%
nitrogen and oxygen
no
yes, it is
The earths crust
Nitrogen has made up the largest portion of Earth's atmosphere for most of Earth's history. It currently makes up about 78% of the atmosphere.