All living things require free energy. all but one statement describes how a group of organisms acquire free energy. that is a) photosynthetic organisms acquire free energy from light in their environment. b) photosynthetic autotrophs make free energy through the process of photosynthesis. c) heterotrophs acquire free energy by consuming carbon compounds produced by other organisms. d) chemosynthetic autotrophs capture free energy from small inorganic molecules present in their environment.