Across
- 8. a relationship between individuals of two species in which one species obtains food or other benefits from the other without either harming or benefiting the latter.
- 9. an applied science that focuses on protecting the Earth's biodiversity and maintaining natural ecosystems.
- 16. The carrying capacity of an environment is the maximum population size of a biological species that can be sustained by that specific environment
- 19. a community of living organisms in a particular area.
- 20. living or once living components of a community
- 22. the lowest ecological zone in a water body, and usually involves the sediments at the seafloor.
- 24. an introduced, nonnative organism that begins to spread or expand its range from the site of its original introduction
- 25. organisms that break down dead or decaying organisms; they carry out decomposition
- 27. organisms that make their own food
- 28. a linear sequence of organisms through which nutrients and energy pass as one organism eats another.
- 30. consists of all the food chains in a single ecosystem.
- 31. phenomenon characterized by the superficial resemblance of two or more organisms that are not closely related taxonomically.
- 32. the process by which the mix of species and habitat in an area changes over time.
- 37. any of an order of small nocturnal mammals that feed mainly on insects.
- 38. the branch of biology that deals with the relations of organisms to one another and to their physical surroundings.
- 40. a graphical representation designed to show the biomass or bioproductivity at each trophic level in an ecosystem.
Down
- 1. a living thing that has an organized structure, can react to stimuli, reproduce, grow, adapt, and maintain homeostasis.
- 2. a defense or tactic that organisms use to disguise their appearance, usually to blend in with their surroundings.
- 3. the environmental factors and interspecies relationships that influence the species.
- 4. a non-living part of an ecosystem that shapes its environment.
- 5. a group of organisms, all of the same species that live in a specific area.
- 6. an organism that regularly consumes a variety of material, including plants, animals, algae, and fungi.
- 7. the natural home or environment of a plant, animal, or other organism.
- 10. where one organism lives on or inside another organism.
- 11. the long-term, predictable atmospheric conditions of a specific area.
- 12. a relationship in which both species are mutually benefited.
- 13. organism that eats dead or rotting biomass, such as animal flesh or plant material.
- 14. spatially heterogeneous geographic areas characterized by diverse interacting patches or ecosystems
- 15. organisms that consume dead and decaying organic matter known as detritus to obtain energy and nutrition.
- 17. anything that constrains a population's size and slows or stops it from growing.
- 18. the mass of living biological organisms in a given area or ecosystem at a given time.
- 21. an interacting group of various species in a common location.
- 23. a distinct geographical region with specific climate, vegetation, and animal life.
- 26. an organism that mostly feeds on meat
- 29. something bottomless or extremely deep.
- 33. the uppermost layer of a body of water that receives sunlight, allowing phytoplankton to perform photosynthesis.
- 34. the region on, above, and below the Earth's surface where life exists.
- 35. an organism that cannot produce its own food and must eat other plants and/or animals to get energy.
- 36. an organism that mostly feeds on plants.
- 39. the state of the atmosphere, including temperature, atmospheric pressure, wind, humidity, precipitation, and cloud cover.