Across
- 3. obtain energy and building materials by eating other organisms
- 5. visible forms of radiant energy
- 9. a large geographical region defined by climate with a specific set of biotic and abiotic features.
- 10. a representation of the feeding relationships within a community
- 12. The maximum population size of a particular species that a given ecosystem can sustain
- 13. describes the position of an organism along a food chain
- 15. The mass of living organisms in a given area
- 18. This is the role of a species within its ecosystem
- 20. Living components
- 22. Maintained through natural processes
- 23. Composed of both living and nonliving things
- 24. The most obvious of the biogeochemical cycles
- 25. A chemical process in which energy is released from food
- 27. without this process most life on earth would not exist
- 29. Warms the atmosphere, evaporates water, and produces winds
- 30. 70% of this energy is absorbed by the hydrosphere and lithosphere
Down
- 1. an organism that makes its own energy rich food components using the sun's energy
- 2. Carbon moves between the abiotic and biotic parts of an ecosystem in this cycle
- 4. acts like a blanket and moderates surface temperatures
- 6. display relationships between trophic levels in ecosystems
- 7. Nonliving components
- 8. Any factor that places an upper limit on the size of a population
- 11. bodies of water that are low in nutrients
- 14. every particle in an organism is part of this cycle
- 16. A way to illustrate who eats whom in an ecosystem
- 17. The zone around the earth where life can exist
- 19. bodies of water that are rich in nutrients
- 21. The ability to maintain an ecological balance
- 26. the abiotic conditions within which a species can survive
- 28. An important characteristic of freshwater ecosystems