no
the mantel
water is the and most found substance also earth and air
The crust is the thinnest layer of the earth
The hydrosphere is the layer of Earth composed of water.
Because it is the lightest element
no
I have absolutely no idea!
scoria
The lightest alkaline earth metal is Beryllium(Be) having atomic mass 9.012 dalton. The heaviest element in this family is radium.
2111
the mantel
The gases in the mesosphere are stratified because they are different weights; with the lightest and least dense at the very outer edge, this is the layer where meteors burn up as they enter the Earth's atmosphere.
The methosphere is a layer but it is not a major layer of the earth
Lithium is the lightest metal, Potassium is the second lightest -- density about 0.86 kg/L
Yes, it is the hottest layer of the Earth!!
The layer of gas surrounding earth is the atmosphere.