| A | B |
| precipitation | water that falls from clouds as rain, snow, sleet, or hail |
| nitrogen cycle | repeated movement of nitrogen through the environment in different forms |
| carbon cycle | repeated movement of carbon through the environment in different forms |
| water cycle | repeated movement of water through the environment in different forms |
| evaporation | the changing of a liquid to a gas |
| condensation | the process in which a gas turns into a liquid |
| elevation | height above sea level |
| front | boundary between two large bodies of air with different temperatures, humidities, and pressures |
| climate | the average of weather conditions over a long time |
| latitude | a measure of how far a place is from the equator |