Study the image. A world map showing the Principal World Air Masses. The four major types of air masses are noted on the map.

What type of weather are the upper part of Africa and the lower half of Asia most likely experiencing, based on the image?

rainfall
dry heat
cold breezes
thunderstorms

The small bags of silica gel you often see in a new shoe box are placed there to control humidity. despite its name, silica gel is a solid. it is a chemically inert, highly porous, amorphous form of sio2. because water vapor readily adsorbs onto the surface of silica gel, it acts as a desiccant. despite not knowing mechanistic details of the adsorption of water onto silica gel, from the information provided you should be able to make an educated guess about the thermodynamic characteristics of the process. predict the signs for δg, δh, and δs for the adsorption of water.