14. What is a major disadvantage of using solar power?
A. damage to wildlife
B. radioactive waste
C. electricity cannot be generated
D. requires large storage batteries

11. Which of the following is the major argument against the use of nuclear power to generate electricity?
A. expense
B. radioactive waste
C. global warming
D. greenhouse effect

27. All of the following will reduce groundwater pollution except
A. burning fossil fuels.
B. limiting the use of fertilizers.
C. repairing leaking sewage systems.
D. disposing of used motor oil correctly.