Unit 2 Key Terms Crossword Puzzle

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Across
  1. 2. The total amount of solar energy that producers in an ecosystem capture via photosynthesis over a given amount of time
  2. 4. The process that converts nitrogen gas in the atmosphere (N2) into forms of nitrogen that producers can use
  3. 5. The movement of phosphorus around the biosphere
  4. 7. The conversion of ammonia into nitrite and then into nitrate
  5. 11. One of six key elements that organisms need in relatively large amounts:nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur
  6. 13. All land in a given landscape that drains into a particular stream, river, lake, or wetland
  7. 15. An event, caused by physical, chemical, or biological agents, resulting in changes in population size or community composition
  8. 16. A rapid increase in the algal population of a waterway
  9. 22. The process by which cells unlock the energy of chemical compounds
  10. 25. nutrient A nutrient required for the growth of an organism but available in a lower quantity than other nutrients
  11. 26. A consumer that eats producers
  12. 28. The hypothesis that ecosystems experiencing intermediate levels of disturbance are more diverse than those with high or low disturbance levels
  13. 31. The conversion of nitrate in a series of steps into the gases nitrous oxide and, eventually, nitrogen gas, which is emitted into the atmosphere
  14. 34. The release of water from leaves during photosynthesis
  15. 35. The process by which producers use solar energy to convert carbon dioxide and water into glucose
  16. 37. The process by which fungal and bacterial decomposers break down the organic nitrogen found in dead bodies and waste products and convert it into inorganic ammonium
  17. 38. The combined amount of evaporation and transpiration
  18. 39. A consumer that eats other consumers
  19. 41. An organism that specializes in breaking down dead tissues and waste products into smaller particles
  20. 43. The amount of biomass present in an ecosystem at a particular time
  21. 47. The energy captured by producers in an ecosystem minus the energy producers respire
  22. 48. The movement of nitrogen around the biosphere
  23. 49. The movement of sulfur around the biosphere
  24. 50. An organism that uses the energy of the sun to produce usable forms of energy
  25. 51. Fungi and bacteria that convert organic matter into small elements and molecules that can be recycled back in the ecosystem
Down
  1. 1. The movements of matter within and between ecosystems
  2. 3. The process by which cells convert glucose and oxygen into energy, carbon dioxide, and water
  3. 6. The movement of water through the biosphere
  4. 8. The movement of carbon around the biosphere
  5. 9. A representation of the distribution of biomass, numbers, or energy among trophic levels
  6. 10. The layer of the atmosphere above the troposphere, extending roughly 16 to 50km above the surface of the Earth
  7. 12. consumer A carnivore that eats secondary consumers
  8. 14. The process by which cells convert glucose into energy in the absence of oxygen
  9. 17. A layer of the atmosphere closest to the surface of the Earth, extending up to approx. 16km
  10. 18. A complex model of how energy and matter move between trophic levels
  11. 19. A measure of how much a disturbance can affect flows of energy and matter in an ecosystem
  12. 20. When oxygen concentrations become so low that it kills fish and other aquatic animals
  13. 21. An organism that is incapable of photosynthesis and must obtain its energy by consuming other organisms
  14. 23. Levels The successive levels of organisms consuming one another
  15. 24. The study and implementation of restoring damaged ecosystems
  16. 27. The process by which fungal and bacterial decomposers break down the organic matter found in dead bodies and waste products and convert it into inorganic compounds
  17. 29. The proportion of consumed energy that can be passed from one trophic level to another
  18. 30. Water that moves across the land surface and into streams and riversCarbon cycle The movement of carbon around the biosphere
  19. 32. The process by which producers incorporate elements into their tissues
  20. 33. The transportation of dissolved molecules through the soil via groundwater
  21. 36. The sequence of consumption from producers through tertiary consumers
  22. 40. The region of our planet where life resides, the combination of all ecosystems on Earth
  23. 42. Low in oxygen
  24. 44. The rate at which an ecosystem returns to its original state after a disturbance
  25. 45. An organism that consumes dead animals
  26. 46. The total mass of all living matter in a specific area