Across
- 2. It can take the form of rain, snow, hail or sleet.
- 3. One of the 3R's. It is treating waste water to make it usable.
- 5. One of the factors that affects the rate of evaporation.
- 7. The careful use of water in order to avoid its wastage.
- 9. A state of matter that has no definite volume and no definite shape.
- 10. The process by which a gas changes into a liquid.
Down
- 1. A very common cause of water pollution. Marine animals may mistake this for food and eat it.
- 4. A state of matter that has a definite volume but no definite shape.
- 6. The process by which a liquid changes into a gas.
- 8. One of the 3R's. It is using waste water to water plants, flush toilets etc.