Earth's Resources

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Across
  1. 2. Heat energy from within the Earth
  2. 7. Organic matter used as a renewable energy source
  3. 8. The wearing away of land by water, wind, or ice
  4. 10. A black rock used as a fossil fuel
  5. 13. Harmful substances in the environment
  6. 14. Naturally occurring solid substances found in the Earth
  7. 16. A liquid fossil fuel used for energy and products
  8. 17. The protection and wise use of natural resources
  9. 19. A resource that can be replaced naturally
  10. 20. Process of making new items from used materials
Down
  1. 1. Clearing or cutting down of forests
  2. 3. Air in motion that can be used to generate energy
  3. 4. A gaseous fossil fuel used in heating and cooking
  4. 5. A substance burned to produce energy
  5. 6. A resource that cannot be replaced quickly
  6. 9. Remains of ancient organisms preserved in rock
  7. 11. Energy generated from moving water
  8. 12. Decayed organic material used as fertilizer
  9. 15. Using resources in a way that meets current and future needs
  10. 18. Energy from the sun