Answer:Carbon, hydrogen, and oxygen are the chemical ingredients necessary for photosynthesis to take place. Hydrogen and oxygen both come from the water in the hydrosphere. Carbon and oxygen come from the carbon dioxide that animals and humans breathe into the atmosphere. Although it is not a chemical ingredient, without energy from the sun, none of this process could occur. (hope it helps-
Carrying capacity is dependent on available space and nutrients in a given area. Better soil will allow for more crops which means more people can be supported!
