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Correct Answer: B) Filtering and recycling used motor oil.
Correct Answer: C) Cooling a school building for the month of August.
Correct Answer: A) Fossil fuel.
Correct Answer: C) They do not cause air pollution.
Correct Answer: A) It can be built and used anywhere.
Correct Answer: B) Russia and the United States.
Correct Answer: C) Fossil Fuels.
Correct Answer: C) Wind.
Correct Answer: B) Fossil fuel power plant.
Correct Answer: B) Smog.
Correct Answer: B) Coal.
Correct Answer: D) Heat generated inside the Earth.
Correct Answer: D) Natural resource.
Correct Answer: A) Petroleum.
Correct Answer: B) Biomass.
Correct Answer: B) Nonrenewable resource.
Correct Answer: A) Potential energy.
Correct Answer: A) Steam.
Correct Answer: B) Mechanical.
Correct Answer: A) Chemical energy.
Correct Answer: C) Soil conservation.
Correct Answer: D) It helps conserve fossil fuels.
Correct Answer: D) Reducing.
Correct Answer: A) Generating electricity.
Correct Answer: D) Fossil fuel energy.