Vertical Structure of the Atmosphere

Questions:

1.Why are the four major layers of the atmosphere separated where they are?

2.What increases the temperature in the stratosphere?

3.Can planes fly in the mesosphere?why or why not?

4.On what does the temperature in the thermosphere depend?

Answers:

1.They are separated because of their different temperatures.

2.The high concentration of ozone in the stratosphere.

3.No.Because there is not enough oxygen to breathe.

4.It depends on the ultra violet radiation that the oxygen absorbs.