What is the region of the atmosphere that is so evenly mixed that it behaves as if it were a single gas?

Question

Quizplus · Accepted Answer

The homosphere is the region of the atmosphere where the composition of gases is relatively constant and is well mixed through turbulent mixing. This region extends from the Earth's surface up to about 80-100 km and includes the troposphere, stratosphere, and mesosphere. Therefore, option A) is the correct choice. The heterosphere is the region of the atmosphere where the composition of gases varies with altitude. The exosphere and thermosphere are the uppermost regions of the atmosphere and have a low density of gases. So, options B), C) and D) are not correct.

What Is the Region of the Atmosphere That Is So