| A | B |
|---|
| Condensation | The process by which a gas changes to a liquid |
| Evaporation | The process by which molecules of a liquid absorb energy and change to the gas state. |
| Precipitation | Rain, snow, sleet, or hail. |
| Photosynthesis | The process by which plants and some other organisms capture light energy and use it to make food from carbon dioxide and water. |
| Respiration | The process by which cells break down simple food molecules to release the energy they contain |
| N2 | gas |
| Symbiosis | A close relationship between two organisms in which at least one of the organisms benefit |
| Succession | Series of predictable changes that occur in a community |
| Pioneer species | (mostly moss) First species in an ares |
| Primary succesion | The changes that occur in an area where no ecosystem has existed |
| Secondary Succession | The changes that occur after a disturbance in an ecosystem. |
| Biogeography | Study of where things live. |
| Continental Drift | The very slow motion of continents. |
