90/
70
"Rare earths" is a collective name for 17 different elements; pressumably each of them would have a different price.
they form above earths surface (THIS ANSWER IS NOT CORRECT) They Form BELOW earths surface(:
It is the Earths Mass
A pie graph with approximately 78% nitrogen, 21% oxygen, and 1% other gases would accurately represent the percentage of elements by volume in Earth's troposphere.
yes this is true.
Troposphere
The Troposphere
The atmospheric layer closest to the Earth's crust is the troposphere. It is where we live and where most weather phenomena occur.
The troposphere.
the troposphere
troposphere
The troposphere
the lowest layer of the atmosphere is the trosospere
troposphere
the troposphere