Earth Day

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Across
  1. 2. Our home planet, where we live and play.
  2. 4. Energy from heat beneath the Earth's surface.
  3. 8. Something that is not needed and is thrown away.
  4. 10. To save or protect resources, like water or energy.
  5. 13. Energy that can be replaced naturally.
  6. 14. The color of grass, trees, and many plants.
  7. 15. Harmful substances that damage the air, water, or land.
  8. 16. A large area of trees and plants.
Down
  1. 1. Energy produced from water.
  2. 3. The month we celebrate Earth Day.
  3. 5. Turning old items into new things instead of throwing them away.
  4. 6. To use something again instead of throwing it away.
  5. 7. Energy from moving air.
  6. 9. Energy from the sun.
  7. 11. When a species no longer exists.
  8. 12. Everything around us, including air, water, and land.
  9. 15. The Earth is a _______ we live on.