D&I @ Sendero: Earth Day 2021

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Across
  1. 3. a layer in the Earth's atmosphere
  2. 4. the type of waste which makes up 23% of solid waste
  3. 7. the protection of something so it cannot be destroyed
  4. 8. to keep or maintain
  5. 10. of or pertaining to the sun
  6. 11. a method of solid waste disposal
  7. 12. the science of organisms and their environment
  8. 13. Founder of Earth Day in 1970
  9. 14. a mixture of decaying materials used as fertilizer
Down
  1. 1. to contaminate water and air with harmful substances
  2. 2. The act of clearing a wide area of trees
  3. 5. a type of precipitation that is caused by air pollution
  4. 6. a natural resource that can be replenished naturally
  5. 9. To convert waste into reusable material
  6. 12. no longer living