1) Which of the following alternative energy sources is NOT inexhaustible?

tidal energy
solar energy
geothermal energy
wind energy

2) Which of the following is a problem associated with the increased use of nuclear energy?

cost of building sage nuclear facilities
major hazards involved in nuclear waste disposal
concern over the possibility of a serious nuclear accident
all of the above

3) One problem with wind energy as a major source of electricity is ________.
it is nonrenewable
it causes major air polution
it does not work at night
the expense of large tracts of the land in populated areas