Across
- 1. the zone of life on earth; the sum total of all ecosystems on earth
- 5. a type of symbiotic relationship between two different species where both benefit
- 9. a group of individuals of the same species living in a specific geographical area and reproducing
- 10. different populations of organisms interacting in a shared environment
- 11. a large georegional regions with distinct plant and animal groups adapted to that environment
- 12. the position of an organism in relation to the flow of energy and organic nutrients through the ecosystem
- 14. a type of symbiotic relationship where one organism benefits while the other is neither helped nor harmed
- 16. a diagram that shows the relative amounts of energy or matter in eacch trophic level of a food chain or web
- 17. the role of a species in an ecosystem consisting of such things as what it eats, when it eats, and where it lives
- 18. the movement of abiotic factors between the living and nonliving components within ecosystems; also known as nutrient cycles
- 19. an interdependent relationship between two different species
Down
- 2. a system composed of organisms (biotic) and nonliving (abiotic) components of an environment
- 3. a species normally living outside a distribution range that has been introduced through either deliberate or accidental human activity
- 4. when individuals or groups of an orgamism compete for similar resources such as territory, mates, water, and food in the same environment
- 6. organisms, often lichen, that colonize barren rock or lava during primary succession and help in the development of soil
- 7. a series of predictable and orderly changes within an ecosystem over time
- 8. An area that provides an organism with its basic needs for survival
- 13. an organism that obtains energy bby feeding on other organisms or their remains
- 15. study of the interactions among organisms and between them and their environment