Ninety percent of our atmosphere lies below an altitude of about:
A)65 km.
B)16 km.
C)100 km.
D)6 km.
E)31 km.

Question

Quizplus · Accepted Answer

The Earth's atmosphere can be divided into several layers based on temperature and altitude. The layer closest to the Earth's surface is called the troposphere and extends up to an altitude of about 16 km. This layer contains about 90% of the Earth's atmosphere, including the air we breathe, as well as weather systems and clouds. Therefore, the correct choice is B.

Ninety Percent of Our Atmosphere Lies Below an Altitude of About