1) this is the circulation of water between land, air and surface. 5) this is the energy that comes to earth from the sun. 6) this is the gas produced as a result of respiration. 7) the changing of substances to other substances by the breaking of bonds in reactants and the formation of bonds in products. 8) this is the energy needed to drive photosynthesis. 9) these are the components of the reservoirs of carbon that are exchanged in our environment. 10) this is a green pigment in chloroplasts that traps light energy from the sun. - down 2) energy stored in chemical bonds of molecules. 3) this substance is the universal solvent, it to make life possible on earth. most of earth is covered with the substance and your cells are made mostly of it as well. we need this substance to survive. 4) this is an organism that obtains its energy from inorganic substances or from the sun.