Sample Response: Each layer found in ice represents one year of snow fall. Each tree ring represents one year of growth. Both ice layers and tree rings, based on their size and make up, can tell us about the climate for that given year. Which ideas did you include in your answer? Check all that apply. A layer of ice represents one year of snow. A ring in a tree ring represents one year of growth. Each layer and ring can give information about the climate for that year.

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.