Across
- 2. obtains its nutrition by feeding on dead plants and animal material
- 3. process of liquid state changing to a gaseous state
- 6. unrestricted growth of a population of organisms occurring when resources in its habitat are unlimited
- 7. nonliving parts of an ecosystem
- 8. "S" shaped curve, occurs when growth rate of a population decreases as the number of its members increases, it occurs when an environment has limited resources
- 14. obtains its nutrition by feeding on dead plant and animal material
- 16. an educated guess
- 18. facts and statistics collected for reference or analysis
- 19. symbiotic relationship in which mutually beneficial to both living things
- 21. an animal that feeds primarily or exclusively on animal matter
- 22. introduces organism that becomes overpopulated and harms its new environment
- 25. study of nature and all things in it
- 26. symbiotic relationship in which one organism benefits at the expense of another
Down
- 1. a chemical processes by which atmospheric nitrogen is assimilated into organic compounds, especially by certain microorganisms as a part of the nitrogen cycle
- 4. kind of animal whose diet comprises of solely plants
- 5. organism that feed on another
- 9. water or gaseous state changing to liquid state
- 10. organism that predators kill for food
- 11. living parts of an ecosystem
- 12. chemical or biological substance which harms water, air, or land quality
- 13. the branch of biology that deals with the relations of organisms to one another and to their physical surroundings
- 15. measure of variation at the genetic, species, and ecosystem level
- 17. a close and prolonged interaction between organisms of different species
- 20. symbiotic relationship in which one species benefit while the other is neither harmed nor helped
- 23. any liquid or frozen water that forms in the atmosphere and falls back to the earth in rain, sleet, and snow
- 24. animals that can feed themselves on both the plants and other animals