Geothermal Heat Pumps May Be Used to Exploit the Temperature

Q6: Hydropower<br>A)provides about 90% of the electricity in

Q7: What country is the largest producer of

Q8: Hydrogen fuel cells<br>A)rely on direct energy from

Q9: Passive solar heating systems involve<br>A)green roofs.<br>B)pumping a

Q10: Solar energy is becoming more popular recently

Q12: Solar thermal systems used to generate electricity

Q13: Governments do not have the power to

Q14: Photovoltaic cells<br>A)produce more carbon dioxide than burning

Q15: Electric-gasoline powered vehicles are called _.

Q16: Geothermal energy is stored in the form