At higher altitude, the temperature and density of the air are _____?

At higher altitude, the temperature and density of the air are _____?

زیادہ اونچائی پر، ہوا کا درجہ حرارت اور کثافت _____ ہے؟
Explanation
At higher altitudes, air temperature decreases due to reduced atmospheric pressure.
Air density also decreases because the air is thinner (fewer molecules per unit volume).