Across
- 5. Mountains, beaches, and forests make up our _________ ___________.
- 7. All the places built by humans.
- 9. By taking shorter showers you help _______ natural resources.
Down
- 1. When you take a ferry or a bus it is a form of ______________.
- 2. When harmful materials are released into nature it is called ___________.
- 3. Water flows through a dam and turns the ___________.
- 4. Electricity made by water power.
- 5. Things found in nature that humans use.
- 6. Changing water levels.
- 8. Water without salt.