Biology Natural Resources

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Across
  1. 2. Land For Plants
  2. 4. Atomic Number 6
  3. 6. Fast Moving Air
  4. 7. Where Plants Can Grow
  5. 9. Blanket Of Air
  6. 14. 78% Of Air
  7. 16. Heating Water
  8. 19. Hello, I Am Under The _____
  9. 20. Nitrogen Fixation Bacteria
Down
  1. 1. NH³
  2. 3. Strongest Substance
  3. 5. NO²
  4. 8. Respiration
  5. 10. Littering
  6. 11. Water Dropping On Earth
  7. 12. Something Useful
  8. 13. Fuel For Cars
  9. 15. NO³
  10. 17. Atmosphere
  11. 18. 3 Oxygen Atoms