Across
- 2. The variety of life in the world or in a particular habitat or ecosystem.
- 3. A trait that helps an organism survive and reproduce.
- 4. The eating of plants by animals.
- 7. Factors Environmental conditions that limit the growth, abundance, or distribution of an organism or a population of organisms in an ecosystem.
- 8. An interaction between organisms or species in which both the organisms or species are harmed.
- 9. The process of breaking down food to release energy.
- 11. The process by which green plants use sunlight to synthesize food from carbon dioxide and water.
- 13. Symbiosis that is beneficial to both organisms involved.
- 16. A large naturally occurring community of flora and fauna occupying a major habitat.
- 19. An association between two organisms in which one benefits and the other derives neither benefit nor harm.
- 20. Efficiency The efficiency with which energy is transferred from one trophic level to the next.
- 24. Level The position an organism occupies in a food chain.
- 25. A community of living organisms and their interactions with their abiotic environment.
- 27. The preying of one animal on others.
- 29. A group of organisms that can interbreed and produce fertile offspring.
- 31. The natural environment in which a species lives.
- 33. Succession The series of community changes which take place on a previously colonized but disturbed or damaged habitat.
- 34. Cycle The series of processes by which carbon compounds are interconverted in the environment.
- 35. Factors Non-living chemical and physical parts of the environment that affect living organisms.
- 36. The total mass of organisms in a given area or volume.
- 40. The process by which different kinds of living organisms are thought to have developed and diversified from earlier forms.
- 41. A group of individuals of the same species living in a specific area.
Down
- 1. Organisms that break down dead or decaying organisms.
- 5. Pyramid A graphical representation showing the number of organisms, biomass, or energy at each trophic level.
- 6. Cycle The series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms.
- 10. Organisms that produce their own food through photosynthesis or chemosynthesis.
- 12. Succession The series of community changes which occur on an entirely new habitat.
- 14. The role and position a species has in its environment.
- 15. Cycles The flow of chemical elements and compounds between living organisms and the physical environment.
- 17. Species A species on which other species in an ecosystem largely depend.
- 18. Factors Living components of an ecosystem.
- 21. All the populations of different species living and interacting in a particular area.
- 22. A relationship between two organisms where one benefits at the expense of the other.
- 23. Web A system of interlocking and interdependent food chains.
- 26. Capacity The maximum population size of a species that an environment can sustain.
- 28. The state or process of a species, family, or larger group being or becoming extinct.
- 30. Organisms that obtain energy by feeding on other organisms.
- 32. Chain A series of organisms each dependent on the next as a source of food.
- 37. The process by which the structure of a biological community evolves over time.
- 38. Interaction between two different organisms living in close physical association.
- 39. Cycle The cycle of water movement through the atmosphere, ground, and bodies of water.