Across
- 3. a single living thing
- 4. all living and nonliving factors in an area
- 7. all living things
- 8. natural home or environment of an organism
- 9. Bacteria turn soil nitrates into nitrogen gas to return in to the atmosphere
- 12. 1 feeding option
- 13. many interconnecting chains that show several feeding options in the ecosystem
- 14. water in plants evaporate into the atmosphere
- 15. water vapor in the air turned into liquid water forming in the sky
- 16. nitrogen-fixing bacteria or lightning change nitrogen gas into useful forms for plants
- 18. all members of the same species living in an area
Down
- 1. A large area that shares a similar climate, plants, and animals
- 2. burning coal and oil, adds Co2 into the air
- 5. Water falls from clouds in the sky
- 6. all parts of Earth where life exists in water, land, and air
- 10. liquid water becomes water vapor
- 11. all populations living in area
- 17. nonliving factors