Things to compost

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Across
  1. 3. Carrot tops and potato skins
  2. 6. Petals of wilted blooms
  3. 7. Wiped hands, left behind
  4. 9. Apple cores and banana peels
  5. 10. Chipped wood pieces
  6. 12. Used to make coffee
  7. 14. Outer covering of walnuts
Down
  1. 1. Added to compost for calcium
  2. 2. Torn boxes, good for compost
  3. 4. Fallen, dry plant material
  4. 5. Freshly cut grass
  5. 8. Light, airy material for compost
  6. 11. Bag used to brew tea
  7. 13. Leftover herbs or seasonings
  8. 15. Hair from people or pets