List two renewable energy sources that save fossil fuels and do not cause pollution?

Answer 1

Fossil fuels (coal and oil) need to be burned to generate energy. Burning any substance produces smog and carbon emissions which can be poisonous and contribute to global climate change. In recent years, renewable energy sources have been growing in popularity. Alternate power sources include:

Wind power (generated by turbines, the large fans you sometimes see in the mountains or on the coast);

Solar power, generated by the dark-colored panels often seen on roofs and on streetlights;

Geothermal, which utilizes heat from inside the Earth;

Hydroeletric, generated by dams or wave motion;

Nuclear, produced by fission reactions

Generally, renewable energy produces less power than fossil fuels, but create very little pollution. Solar, wind, geothermal, and hydro produce no emissions or waste, but must be placed in positions where they can utilize natural conditions. No sunlight=no solar power (although cloudy Germany has been pretty successful with solar panels) Nuclear produces no atmospheric pollution, but creates radioactive waste, which must be disposed of. Re-purposing of spent nuclear fuel is an emerging technology which way offset many of the risks of nuclear.

Answer 2

I think:

Solar Power, Wind Power and Nuclear Fusion.

Hey, look. It's 3.