A city is located at sea level. From the ground to 200 meters altitude, the temperature decreases by 3C. From 200 meters to 400 meters altitude, the temperature remains constant. Therefore, the mixing depth is ____ meters thick.
A) 0
B) 200
C) 400
D) 600
Question 2
Which characteristic of air provides a measure of the average speed of the atoms and molecules?
A) pressure
B) temperature
C) density
D) evaporation