Across
- 2. one species benefits and the other is not harmed/helped
- 4. beneficial to both species
- 5. the final, stable community in the environment
- 8. breaksdown the complex compounds of dead plants/animals
- 9. occurs on a surface where no ecosystem existed before
- 10. gradual process of change and replacement of the types of species in a community
- 16. lightning and bacteria convert nitrogen into usuable forms
- 17. shows all possible feeding relationships in a community
- 18. eats plants
- 19. colonizes an uninhabited area that starts an ecological cycle
Down
- 1. one species benefits and the other is harmed
- 3. occurs where an ecosystem has previously existed
- 6. evaporation, transpiration, condensation, precipitation
- 7. photosynthesis and respiration cycle carbon and oxygen through environment
- 11. eats meat
- 12. they ingest food containing the sun's energy
- 13. eats both plants and meat
- 14. simple model that shows how matter and energy move
- 15. a feeding step in the transfer of energy in ecosystem
- 19. they trap energy from the sun, bottom of the food chain