Across
- 2. small spaces or holes.
- 6. a black or brown rock that is found in the Earth and burned as fuel.
- 7. does not allow liquid or gas to pass through it.
- 9. a liquid that is found beneath Earth's surface that is used to form fuels and to make a variety of other products.
- 10. how you get rid of something
- 11. a layer of rock that is permeable to water.
- 13. resource something that people use from nature.
- 14. to use less of something.
Down
- 1. can be replaced by nature easily or quickly.
- 3. to put through a process that allows things to be reused.
- 4. remains or traces of living things from the past.
- 5. the act of saving, protecting, or using resources wisely.
- 8. pores or holes that allows liquids or gases to pass through.
- 12. to use something again and again