Across
- 1. one species harming another
- 4. population of different species
- 5. organisms eating other organisms
- 6. make their own food
- 8. all organisms of the same species
- 11. both species benefit
- 13. one benefits but doesn't harm the other
- 16. # of babies born in a given time period
- 17. # of individuals died in the same period
- 18. species no longer living
- 19. species at risk of being extinct
Down
- 2. species share food or energy
- 3. demand of resources
- 7. anywhere life exists
- 9. one's role
- 10. place where one lives
- 12. factor restricts the size of a poplation
- 14. seasonal movement of organisms
- 15. species at risk but not endangered