| A | B |
|---|
| turbine |  |
| hydroelectric |  |
| geothermal | |
| biomass fuel | from creature that lived long ago |
| carbon dioxide | the byproduct of burning fuel |
| water vapor | the strongest of the greenhouse gases |
| coal | the dirtiest of the fossil fuels |
| cliamte | the temperature over a long period of time |
| weather | the conditions in a specific place and time |
| solar | energy from the sun |
