Across
- 4. how energy and nutrients move throughout an ecosystem
- 7. things that represent living and non living things in an ecosystem
- 8. Graphical demostraion of the energy transfer throughout tropic levels
- 10. all the food chains in an ecosystem
- 11. an area that a number of species use
- 12. a area that living organisms and landscape play a role to form a circle of life
- 14. organism fight for the same resource
- 16. a percent of energy that is passed through trophic levels
- 18. something that is food for another organism
- 19. the posistions and roles of orgnaims in a food chain
- 20. something that makes its own food
Down
- 1. is a nonnative species that does harm to a partcular enviorment
- 2. all the different forms of life in an area
- 3. something that holds a polulation form growing
- 5. the total amount of space living organisms take up in an enviorment
- 6. something that eats other things
- 9. a natural behavior
- 13. Species that play a crucial role in en enviorment
- 15. the way energy transfers form organism to organism
- 17. a orgnaism that breaks down dead organic material