| A | B |
|---|
| CONDENSATION | change of water from vapor to liquid |
| PRECIPITATION | any form of water which falls to land |
| GROUNDWATER | water that is stored in between or within rocks |
| RUNOFF | precipitation that falls on land and then goes into rivers and lakes |
| EVAPORATION | change of water from liquid to vapor |
| COMBUSTION | process of burning a substance such as wood or fossil fuels |
| DECOMPOSITION | the breakdown of substances into simpler molecules |
| NITROGEN CYCLE | movement of nitrogen between the environment and living things |
| WATER CYCLE | movement of water between the oceans, atmosphere, land and living things |
| CARBON CYCLE | the exchange of carbon between the environment and living things |
| PHOTOSYNTHESIS | the basis of the carbon cycle; process in which plants make food |
| PIONEER SPECIES | the first organisms to live in an area |
| SUCCESSION | the gradual development of a community over time |
| BIODIVERSITY | variety of species present in an area |
| CLIMAX SPECIES | a strong, well-adapted species that grows over time |
| NITROGEN FIXATION | the process in which bacteria in the soil change nitrogen gas into forms plants can use |
| TRANSPIRATION | process in which plants release water vapor |
| NITROGEN GAS | makes up 78% of the Earth's atmosphere |
