Please answer it's due in 20 minutes. See if you can think of a way to prove that there's water vapour in the air around you?(Condensation)

Geothermic gradient is the rate of increasing temperature with respect to increasing the depth in the earths interior. away from tech tonic plates boundaries, it is about 25-40 c/km (72-87 degrees f/mi) of depth near the surface in most of the world.

Answeroil-shale;