earth day

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Across
  1. 1. A person who helps others or the planet without getting paid.
  2. 4. An event where people pick up trash to help the planet.
  3. 7. Traveling to and from work or school, often discussed in eco-friendly ways.
  4. 8. Power from the sun used to make electricity.
  5. 9. Grown or made without chemicals.
  6. 11. To turn old things into something new and useful.
  7. 13. Good for the planet; not causing harm.
  8. 18. Cutting down too many trees in forests.
  9. 19. Things that are thrown away because they are no longer wanted.
  10. 20. A special day to celebrate and protect our planet.
  11. 21. The invisible gas we breathe.
Down
  1. 2. Things like water, trees, and sunlight we get from nature.
  2. 3. A time when people turn off lights to save energy.
  3. 5. A thick forest with lots of rain and many plants and animals.
  4. 6. Energy that doesn't pollute the environment.
  5. 10. A gas in the sky that protects Earth from too much sunlight.
  6. 12. Many different kinds of living things in one place.
  7. 14. The natural home of a plant or animal.
  8. 15. Trash left in places it shouldn't be.
  9. 16. Energy made from moving air.
  10. 17. To keep something safe from harm.