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

1) I am pretty sure that f the following alternative energy sources which is NOT inexhaustible is D.Wind Energy. I choose this option because this type of energy can not be used completely or in full measure. 

2) The problems which are associated with the increased use of nuclear energy are being revealed by all the options attached to this question. As you can see, all the issues connected to increacing of nuclear energy are represented above the question, so the answer is D.
3) One problem with wind energy as a major source of electricity is  D. the expense of large tracts of land in populated areas. This is the major drawback of such source of renewable energy.