| A | B |
|---|
| Fossil Fuels | form from the remains of plants and other organisms that were buried and altered over millions of years |
| Coal | rock that contains at least 50% plant remains |
| Oil | thick, black liquid formed from the buried remains of microscopic marine organisms |
| Natural Gas | forms from marine organisms, but in a gaseous state |
| Reserve | amount of a fossil fuel that can be extracted at a profit using current technology |
| Nuclear Energy | alternate energy source produced from atomic reactions |
| Solar Energy | energy from the Sun |
| Wind Farm | area where a large number of windmills are placed in one area for the purpose of generating electricity |
| Hydroelectric Energy | electricity produced by water power |
| Geothermal Energy | energy obtained by using hot magma or hot, dry rocks inside Earth |
| Biomass Energy | energy derived from burning organic material such as wood, alcohol, and garbage |
| Mineral Resource | deposit of useful minerals |
| Ores | deposits in which a mineral or minerals exist in large enough amounts to be mined at a profit |
| Recycling | using old materials to make new ones |
