Across
- 1. type of succession that does not have any topsoil
- 3. any factor that restricts the number of an organism
- 5. both organisms benefit
- 7. each step in a food chain or food web
- 11. type of growth model represented by carrying capacity
- 12. cycle that includes burning of fossil fuels
- 14. a biological community and all of the abiotic factors
- 16. a single species that share the same location
- 17. model representing many interconnected food chains
- 18. and area why an organism lives
- 19. large group of ecosystems that share same climate
Down
- 2. organisms that obtain energy from the sun
- 4. one organism benefits and the other is unaffected
- 6. organism that must eat to obtain energy
- 8. cycle where plants contribute through transpiration
- 9. role or position of an organism in its environment
- 10. a thin layer around Earth that supports life
- 13. nonliving factors in an organism’s environment
- 15. study of relationship among organisms and their environment
- 18. species that is changing conditions on earth by its activities