Across
- 2. area where an organism lives including the biotic and abiotic factors that affect it
- 5. symbiotic relationship in which both species benefit from the relationship
- 6. animal that consumes the carcasses of other animals
- 7. organism that obtains energy by eating animals
- 9. part of Earth in which life exists including land, water, and air or atmosphere
- 11. symbiotic relationship in which one organism benefits and the other is neither helped nor harmed
- 17. scientificstudy of interactions among organisms and between organisms and their environment
- 18. physical, or nonliving, factor that shapes an ecosystem
- 20. in which chemical energy is used to produce carbohydrates
- 23. organism that breaks down and obtains energy from dead organic matter
- 29. pyramid illustration of the relative amounts of energy or matter contained within each trophic level in a given food chain or food web
- 30. full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions
- 31. interaction in which one organism (the predator) captures and feeds on another organism (the prey)
- 32. classification comprising related organisms that share common characteristics and are capable of interbreeding
Down
- 1. web network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem
- 3. organism that obtains food by consuming other living things; also called a consumer
- 4. Exclusion Principle principle that states that no two species can occupy the same niche in the same habitat at the same time
- 8. a group of organisms of one species that interbreed and live in the same place at the same time.
- 10. organism that feeds on plant and animal remains and other dead matter
- 12. relationship in which two species live close together
- 13. organism that obtains energy by eating both plants and animals
- 14. organism that obtains energy by eating only plants
- 15. a group of ecosystems that share similar climates and typical organisms
- 16. all the organisms that live in a place, together with their nonliving environment
- 19. process used by plants and other autotrophs to capture light energy and use it to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates such as sugars and starches
- 21. each step in a food chain or food web
- 22. assemblage of different populations that live together in a defined area
- 24. a symbiotic relationship in which one organism lives on or inside another organism and harms it
- 25. any living part of the environment with which an organism might interact
- 26. organism that is able to capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds; also called a producer
- 27. ability of an organism to survive and reproduce under circumstances that differ from their optimal conditions
- 28. a series of steps in an ecosystem in which organisms transfer energy by eating and being eaten