Ireally really need this answer now we need lots of energy to do the things we want to do: keep our houses warm, drive cars, run computers, grow and harvest food. there are many sources of energy. one source of energy we rely on is nonrenewable. that means once it is gone, there will not be any more for man to use. which natural resource is a nonrenewable source of energy? a) oil b) sunlight c) water d) wind