Simple molecules are further broken down in cells in a process called during which energy stored in their chemical bonds is used to power the production of atp. a. anabolismb. photosynthesisc. muscle contractiond. respiration

just here for the other one bc they put up with u

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs