Across
- 3. an organism that is able to form nutritional organic substances
- 5. the plants of a particular region, habitat, or geological period
- 6. the branch of biology that deals with the relations of organisms to one another and to their physical surroundings
- 8. the layer of water at or near Earth's surface
- 10. Consumer an organism that feeds on primary producers
- 12. a comfortable or suitable position in life or employment
- 13. consumer an organism that feeds on primary producers.
- 14. remove the nitrates or nitrites from (soil, air, or water) by chemical reduction
- 15. consumer are organisms that eat primary consumers for energy.
- 16. Community community of plants, animals, and fungi
- 17. the action or process of precipitating a substance from a solution
- 18. Organic nitrogen from feces
Down
- 1. an animal that feeds on plants
- 2. a device or installation that is used to break down a chemical substance
- 4. the state or quality of producing something, especially crops
- 7. green consisting of microscopic plants
- 9. a biological community of interacting organisms and their physical environment
- 11. devoid of life; sterile
- 13. Succession type of ecological succession in which plants and animals first colonize a barren, lifeless habitat
- 16. an event or contest in which people compete