Across
- 3. - An organism that helps define an entire ecosystem
- 5. - A common feeding behavior of natural organisms where one species feeds on another for its survival
- 9. - An organism that feeds on dead organic material
- 10. - Describes the role an organism plays in a community, such as what they eat, where and how they live, and their interactions with other organisms
- 12. - All the different kinds of life in one area
- 15. - underwater ecosystems formed by the dense growth of several different species of large algae
- 18. - Animals that have a very specific and limited diet
- 20. - The region on, above, and below the Earth's surface where life exists
- 21. - An area classified according to the species that live in that location
- 22. - The study of relationships among living organisms
- 26. - An organism that produces its own food
- 27. - The highest taxonomic rank in the hierarchical biological classification system
- 29. - The open and well-lit area of a freestanding body of freshwater
- 30. - An organism moving out of its home because it is not suit for them anymore
- 31. - A taxonomic category in the biological classification
- 32. - The coldest biome on earth
- 33. - A barren area of landscape where little precipitation occurs and living conditions are hostile for plant and animal life
- 34. - Living organisms that shapes its environment
- 36. - A partially enclosed, coastal water body where freshwater from rivers and streams mixes with salt water from the ocean
Down
- 1. - An area of land that drains into a body of water
- 2. - A group of the same species in an area
- 4. - Species that use similar niches in different habitats or locations
- 6. - Science concerning with classification of organisms
- 7. - A group of different species in one area
- 8. - An individual living thing
- 11. - The bottom of the ocean where sunlight doesn’t reach
- 13. - Holds the most ocean biomass
- 14. - Any of a group of single-celled prokaryotic organisms
- 16. - The number of individuals of a certain species that the environment can constantly support
- 17. - A relationship between individuals of two species in which one species benefits without harming or benefiting the other
- 19. - microscopic marine algae
- 23. - A close association between two or more different biological species
- 24. - The use of energy released by inorganic chemical reactions to produce food
- 25. - A natural home or environment of an organism
- 28. - Composed of all the food chains in an ecosystem
- 35. - Coniferous forest region