Across
- 3. organisms moving out of a particular area
- 4. from the sun, this abiotic factor especially affects plant growth
- 5. one who studies relationships among organisms and the environment
- 7. number of organisms born per unit time
- 9. study of interactions between organisms and their environment
- 11. all of the communities of organisms and the abiotic factors in an area
- 12. this abiotic factor often falls as precipitation to renew the supply on earth
- 13. all of the organisms of the same species that live in the same place at the same time
- 14. layer of the earth where life exists
Down
- 1. organisms moving into a new area
- 2. number of individuals in a given area
- 6. physical factors of the environment
- 7. living part of the environment
- 8. number of organisms that die per unit time
- 10. all of the populations of organisms living in the same area