(9) hot weather causes more human discomfort when the air is humid than when it is dry. (r) which of the following pairs of quantities

Hot weather causes more human discomfort when the air is humid

Explanation:

Humidity causes lots of discomforts as compared to the dry air as it holds moisture and air pressure and not allowing us to cool, as higher humidity cause higher health concerns. Humidity cause humans o feel more high temperature as compared to normal dry air as dry air has wind and is moving inaction as compared to the static and hanging air in high moisture content. As the appropriate humidity content should be no more than 60 percent in the air, as more humidity above this is considered to be deadly for manas it can alter the blood pressure and increase respiration.

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.