Across
- 3. below the low-tide line is a shallow water
- 5. consumers that eat animals
- 6. carnivore that feeds on dead organisms
- 7. frozen soil
- 9. trees that produce their seeds in cones and have leaves shaped like needles
- 10. mostly grasses and other non-woody plants
- 11. process of changing free nitrogen into usable form of nitrogen
- 16. prairies near the equator
- 17. second layer of shorter trees and vines
- 18. break down wastes and dead organisms returns raw materials
Down
- 1. trees that shed their leaves and grow new ones each year
- 2. group of land ecosystems with similar climates and organisms
- 4. extremely cold dry biome
- 8. study of where organisms live
- 9. plates move
- 12. people who bring a new organism to a new place
- 13. between highest high-tide and lowest low-tide
- 14. fresh water meets the salt water
- 15. eat both plants and animals
- 19. leaf roof made from trees also first layer of the forest