Across
- 4. leafs covering tall trees
- 5. an interaction in which one animal feeds on another
- 9. a material formed from decaying leaves
- 10. necessity of life
- 12. the general place where a organism lives
- 13. two species benifit from one another
- 14. weather condtions
- 15. water covers the soil
- 17. two species lving closely
- 18. inculdes phytoplankton and zooplankton
Down
- 1. rain, sunlight
- 2. a plant that sheds their leaves
- 3. oraganism and their surroundings
- 6. the ablitly to survive in hard times
- 7. interruption to a species that harms it
- 8. a layer of permanetly forzen subsoil
- 11. an organism lives inside of another
- 16. special kind of wetlands