Ecosystems and the Biosphere: Energy Flow and the Recycling of Matter

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Across
  1. 3. The amount of light energy converted to chemical energy by photosynthesis per unit time. (3 words)
  2. 5. What is the trophic level of a snake that feeds upon a mouse? (2 words)
  3. 7. This process returns the chemicals locked in the bodies of dead plants and animals to the ecosystem so they may be used again.
  4. 9. Animals that obtain their energy by eating a mixture of plants and animals.
  5. 10. Term that describes as organism that can make its own food.
  6. 12. Animals that obtain their energy by consuming only plants.
  7. 13. This ecosystem is responsible for the greatest amount of net productivity. (2 words)
  8. 15. The incorporation of nitrogen compounds into plant and animal tissues.
  9. 17. The series of steps in which organisms transfer energy from one organism to another by eating and by being eaten.(2 words)
  10. 19. The movement of water through various reservoirs. (2 words)
  11. 20. In this step of the water cycle, water molecules are added to the atmosphere in the form of water vapor.
  12. 21. This key element is needed for the building of proteins and nucleic acids.
  13. 25. All the living organisms in an area as well as the abiotic factors with which they interact.
  14. 26. Water leaves the atmosphere and returns to Earth in this process.
  15. 29. Another name for a heterotroph.
  16. 30. The amount of chemical energy (glucose) available to the consumers in an ecosystem. (3 words)
  17. 31. Converting the energy stored in molecules of glucose into a form of energy the cell can use. (2 words)
  18. 35. This term describes an organism that feeds on plant and animal remains, animal wastes, and other dead matter.
  19. 36. This element is required for the building of molecules of ATP and DNA
  20. 37. The process in which elements and chemical compounds are passed from one organism to another and from one part of the biosphere to another. (2 words)
  21. 38. This process occurs in the clouds when water vapor is converted into a liquid.
  22. 40. The process of converting nitrogen gas into ammonia and nitrates (2 words)
  23. 41. The burning of_________ _________ returns carbon dioxide to the atmosphere. (2 words)
Down
  1. 1. The steps in a food chain. (2 words)
  2. 2. The production of nitrates from ammonia.
  3. 4. The graphical representation of the amount of energy or matter in an ecosystem. (2 words)
  4. 6. In this process, the suns energy is trapped in the atmosphere, warming the earth. (2 words)
  5. 8. Using the energy from the sun to convert carbon dioxide and water into molecules of glucose.
  6. 11. The first organism in every food chain
  7. 14. AN energy-releasing process in cells that return carbon dioxide to the atmosphere.
  8. 16. The amount of energy (percentage) passed from one tropic level to next. (2 words)
  9. 18. The main autotrophs in aquatic ecosystems.
  10. 22. Animals that obtain their energy by eating other animals.
  11. 23. The nitrogen cycle is made possible by soil dwelling _______________.
  12. 24. Term that describes an organism that cannot make its own food.
  13. 27. The conversion of nitrates to nitrogen gas.
  14. 28. The production of ammonia by bacteria during the decay of nitrogen containing organic matter.
  15. 31. This process creates organic compounds using the energy from inorganic chemical reactions.
  16. 32. This process removes carbon dioxide from the atmosphere.
  17. 33. The amount of organic material in an ecosystem.
  18. 34. The loss of water from the leaves of plants.
  19. 39. Many food chains woven together. (2 words)