Earth Day 4/22/2026

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Across
  1. 2. Decayed organic matter used as fertilizer; the process of decomposing organic waste into nutrient-rich soil.
  2. 3. To convert waste materials into new, reusable materials or products.
  3. 7. Of or relating to the sun or energy derived from sunlight.
  4. 9. Pollutants or gases released into the atmosphere from various sources.
  5. 11. The layer of gases surrounding Earth, held in place by gravity.
  6. 12. The branch of science studying the relationships between organisms and their environment.
  7. 13. No longer existing; having died out entirely as a species.
  8. 14. To keep safe from harm, decay, or destruction.
  9. 17. Relating to a method of using resources so they are not depleted or permanently damaged for future generations.
  10. 18. To transform
  11. 19. Capable of being naturally replenished; not permanently depleted by use.
  12. 20. Trash or waste left scattered in a public place or natural environment.
Down
  1. 1. A form of oxygen found in Earth's upper atmosphere that absorbs harmful ultraviolet radiation from the sun.
  2. 4. A site where waste is buried in layers in the ground.
  3. 5. A community of living organisms interacting with each other and their physical environment.
  4. 6. To make (air, water, or land) dirty and unsafe through harmful substances.
  5. 8. Of, relating to, or derived from living matter; produced without synthetic chemicals.
  6. 10. To protect from loss, waste, or harm; to use carefully and sparingly.
  7. 15. The natural world, including air, water, land, and living things, especially as affected by human activity.
  8. 16. The natural environment where a plant or animal species lives and thrives.