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