Question

Which gas is most abundant in earth’s atmosphere?
A.oxygen
B.nitrogen
C.carbon dioxide
D.methane

Answer 1

wrong question here is the real one. Of these layers of the atmosphere, which is the least dense?


Of these layers of the atmosphere, which is the least dense?









A.
exosphere







B.
stratosphere







C.
troposphere







D.
mesosphere

Answer 2

The troposphere is the lowest layer of Earth's atmosphere and site of all weather on Earth. The troposphere is bonded on the top by a layer of air called the tropopause, which separates the troposphere from the stratosphere, and on bottom by the surface of the Earth.