Across
- 2. limited supply and nonrenewable
- 3. water is not consumed or depleted
- 6. perfectly managed by human recycling
- 8. finite element found in rocks that cannot be replenished on a human timescale once it is mined and used
- 9. rise and fall of the ocean
- 11. You get it if your naughty for Christmas
- 12. If it will take millions of years to run out, it's renewable.
- 14. H2O
Down
- 1. nonrenewable material that is essential for renewable energy technology
- 2. Derived from Greek roots
- 4. stored energy originally derived from the sun
- 5. naturally replenished
- 7. nonrenewable fossil fuel
- 10. naturally replenished within a human lifetime
- 13. It takes millions of years to make, but only minutes to burn
