I think it is number 3 or c because earths layer is just the right tempature for us to live on, and the mantle is very hot liquid that is under the crust or the 1st layer of earth and it gets hotter the deeper you go like the inner core is molten metal and is very very hot. hope this helps
<u>4- Air temperature gets cooler as you move away from Earth's surface.
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<h2>Explanation:</h2>
The troposphere is the most insignificant layer of our air. It is the layer in which life survival is possible and pretty much all atmospheres occur in this least layer. Most fogs appear here, generally in light of the fact that 99% of the water vapor noticeable all around is found in the troposphere. As you move higher in the troposphere the air temperature gets cooler.
Thus, statement 4 with this concept is considered as true statement.
