Which one of the following energy sources is most likely to lead to thermal pollution?
A) A coal-fired power plant
B) A large field of windmills
C) A hydroelectric plant
D) A large field of solar cells
Question 2
Wood pellets are produced from the waste sawdust of lumber and paper mills. Home-heating stoves burning these pellets can heat homes directly, instead of relying on other energy sources. Heating your home with wood pellets is
A) sustainable, less polluting, and more efficient than heating a home using electricity from a coal-fired power plant.
B) sustainable, much more polluting, and about 30 more efficient than using electricity from a coal-fired power plant.
C) not sustainable but is less polluting and is about as efficient as using electricity from a coal-fired power plant.
D) not sustainable and pollutes more than using electricity from a coal-fired power plant.