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Across 2. Protects the shorelines from wave action 4. The role that each organism fulfills in their ecosystem 6. Receives less than 25 cm of precipitation/yr 8. The American grassland, other than steppe and plains 9. Non-living factors in a biome 11. Type of temperate forest with hardwoods and other leafy trees 12. The world of marine organisms 16. Zones located at the northern/southern-most of Earth 17. Receives over 400 cm of precipitation/yr (2 Words) 21. Zone located at the equator 22. Term for species that are at risk due to low population 25. Large bodies of flowing freshwater 28. Location just inside the shore 29. The rain forest of the sea (2 Words) 30. Where organisms' needs are met 32. Zones located north and south of the tropical zones 33. Snow and rain measured annually 34. Large body of freshwater 35. Where fresh water and sea water meet

Down 1. Where lions live 3. A species that is more important to an ecosystem 5. Another term for ecosystem engineer 7. The Russian name for a boreal forest 8. All the members of a species in an area at the same time 10. The community plus abiotic factors 13. The place for bottom-dwellers 14. Small body of freshwater 15. What determines a biome or ecosystem 18. Another term for plant or phytoplankton 19. A wetland with tall tree roots 20. Location just beyond the tides 23. Term for keystone species, like a bee 24. Graph that shows annual rainfall and temperatures together 26. Type of forest with mostly evergreens 27. High elevations of snow and ice 28. Land mass surrounded by water 31. Can be hot or cold with little precipitation