All of the following are forms of energy a living organism can use except: a. heat b. mechanical c. chemical d. nuclear

b mechanical because were not robots and stuff like that

explanation:

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.