Across
- 3. material from Earth that people use
- 7. when a resource is limited but demand is high
- 9. careful use of resources to avoid waste
- 10. energy from the sun
- 12. sources of water that people use
- 13. resource that can be replaced naturally over time
- 14. energy resource formed from ancient plants and animals
- 15. harmful substances added to the environment
Down
- 1. using fewer resources to create less waste
- 2. using resources in a way that does not run out
- 4. resource that cannot be replaced quickly
- 5. cutting down large areas of trees
- 6. removing minerals from the Earth
- 8. process of turning used materials into new products
- 11. using something again instead of throwing it away