Across
- 4. one benefits at the others expense
- 5. the number of each specific type of organism in an area
- 9. non-living things in a ecosystem
- 10. both organisms benefit
- 11. all living organisms on earth
- 15. having a negative effect on the environment or other organisms
- 16. a complex set of physical and biological factors, biotic and abiotic, that surround an organism and influence it
- 17. includes all living organisms in an area as well as the non-living things that surround an organism
Down
- 1. when one or more organisms in a population relies on the same limited resources
- 2. one organism benefits while the other is unaffected
- 3. the living things in a ecosystem
- 6. the ability of an organism to stay alive
- 7. having a positive effect on the environment or other organisms
- 8. organisms within an ecosystem rely on each other for survival
- 12. a self contained living thing
- 13. groups of populations that interact together in a specific area
- 14. the difference between individuals of the same species, caused by genetics or environmental factors