Across
- 5. the predictable changes following a disturbance
- 8. describes the state of an ecosystem with relatively constant conditions over a period of time
- 11. a sequence do organisms, each feeding on the next, showing how energy is transferred from one organism to another
- 13. the biotic conditions within which a species can survive
- 14. the movement of matter through the biotic and biotic environment
- 15. refers to a species that has died out and no longer occurs on earth
- 16. an ecosystem that is maintained through natural process
- 18. the ability to maintain an ecological balance
- 20. the maximum population size of a particular species that a given ecosystem can sustain
- 21. the layer of gasses surrounding the earth
- 23. succession on newly exposed ground, such as following a volcanic eruption
- 28. any factor that restricts the size of a population
- 29. a body of water that is low in nutrients
- 30. visible forms of radiant energy
- 31. the biogeochemical cycle in which carbon is cycle through all the spheres
- 33. the series of processes that cycle water through the environment
- 34. all non-living things in an ecosystem
- 35. the series of processes in which nitrogen compounds are moved through the biotic and biotic environment
- 36. the form of energy transferred during heating and cooling
- 37. the number of species in an area
- 38. all living things and their physical and chemical environment
- 39. the process in which the sun's energy is converted into chemical energy
- 40. an organism that makes its own energy-rich food compounds using the suns energy
Down
- 1. the mass of living organisms in a given area
- 2. a representation of the feeding relationship within a community
- 3. an organism that obtains its energy from consuming other organisms
- 4. earth's solid outer layer
- 6. the process by which sugar and oxygen is converted into carbon dioxide and water, to provide energy for the cell
- 7. succession in a partially disturbed ecosystem, such as following a forest fire
- 9. all of earths water is solid, liquid and gas form
- 10. a body of water that is rich in nutrients
- 12. all living things in an ecosystem
- 17. a representation of energy, numbers, or biomass relationships in ecosystems
- 19. the variety of life in a particular ecosystem
- 22. the level of an organism in an ecosystem depending on its feeding position along a food chain
- 24. the function of a species serve in its ecosystem
- 25. the zone around earth where life can exist
- 26. energy that travels through empty spaces
- 27. a large geographical region defined by climate with a specific set of biotic and a biotic features
- 32. the land area drained by a particular river