| A | B |
|---|
| evaporation | The change of water from liquid water to water vapor. |
| water cycle | The movement of water through Earth's ecosystems. |
| transpiration | The process by which plants lose water to the air. |
| condensation | The process by which water vapor chanes form a gas to a liquid. |
| precipitation | The liquid water that returns to Earth's surface, usually as rain or snow. |
| groundwater | Water that soaks into the ground. |
| carbon cycle | The flow of carbon dioxide and oxygen through Earth's ecosystem. |
| nitrogen cycle | The movement of itrogen through ecosystems. |
| respiration | Organisms take in oxygen and give off carbon dioxide. |
| photosynthesis | The process through which plants make food. The sun starts the process and in the end oxygen is given off. |
