| A | B |
|---|
| The water cycle | Powered by the Sun |
| Infiltration | Movement of surface water into rock or soil |
| Transpiration | Absorbtion and release of water by plants |
| Precipatation | Rain, snow, hail, for example |
| Runoff | Surfacewater flowing to the sea from streams |
| Ice caps and glaciers | 1.8% of the total Earth's water |
| Freshwater | 2.5% of the total Earth's water |
| Lakes and rivers | 0.01% of the total Earth's water |
| Atmosphere | 0.001% of the total Earth's water |
| Ground water | 0.63% of the total Earth's water |
| Oceans | 97.5% of the total Earth's water |
