Can someone please help me if you can’t do A B and C Just do A and also for A it’s asking for what the air temperature is not the definition I will also give Brain to who ever knows the Answer thanks

You can get the answer in g.o.o.g.l.e

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.