Change Climate Change

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Across
  1. 4. Colorless, odorless gas
  2. 5. Use to much, use carelessly
  3. 8. To go on foot
  4. 10. Knowledge of a situation
  5. 11. Harmful or unpleasant
  6. 12. Relating to the sun
  7. 15. Use old items over again
  8. 17. To continue, keep the same
  9. 18. Shortage of water
  10. 20. Who can make the change
Down
  1. 1. Make different
  2. 2. Decayed organic material
  3. 3. Energy that is collected naturally
  4. 6. Surroundings or conditions
  5. 7. Form of energy from charged particles
  6. 9. Form of transportation you pedal
  7. 11. To carry from one place to another
  8. 13. Efficient light bulbs
  9. 14. Capacity for doing work
  10. 16. Building with vanes that turn in the wind
  11. 19. Doing your part