Halloween

6. Spooky environmental problem to avoid
7. Sound made by wolves and coyotes; apex predators important to ecosystem balance.
9. pumpkins are this type of waste, which is fine if composted but problematic in landfills
11. Bats, owls, wolves, and spiders are all common Halloween-associated
12. A spooky time of night; relevant to nocturnal wildlife and energy conservation
15. non-lethal, eco-friendly method of pest control in agriculture and gardening
17. animal often associated with Halloween and nature reserves
19. The natural process of organic matter breaking down, a spooky theme and a vital environmental cycle.

1. where millions of pumpkins and costumes end up, releasing methane
2. A common Halloween creature that provides natural pest control
3. Halloween decoration that can be decomposed
4. Often featured in Halloween imagery (werewolves, night scenes); a key part of the earth's natural cycles
5. material that makes up most costumes and candy wrappers, a "scary" problem for the environment
8. A spooky location; can be linked to the concept of burial and its environmental impact
9. a nocturn bird of prey often associated with the spooky season
10. the eco-friendly alternative to trashing a carved pumpkin
13. recycling these can help the planet during trick-or-treating
14. A spooky setting for stories, representing a natural habitat and carbon sink
16. often made from oil-based plastics and worn only once
18. a major environmental issue during the holiday due to costumes and wrappers