| A | B |
|---|
| renewable resource | natural resources that are constantly available or do not take a long time to form |
| solar energy | energy from the sun |
| hydroelectric power | electricity produced by flowing water |
| wind energy | electricity produced when wind turns a turbine |
| biomass fuels | fuels made from living things such as wood, leaves, food wastes and manure |
| gasohol | mixture of alcohol and gasoline that can be used to fuel cars |
| biodiesel | fuel made from oils obtained from crops such as soybeans |
| geothermal energy | energy obtained from the intense heat from Earth's interior |
| hydrogen fuel | clean burning fuel that still takes more energy to produce than it provides |
