Biology Unit A Review

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Across
  1. 3. an organism able to make its own food using the Sun's energy and raw materials; also a producer
  2. 9. Chemical essential to living things
  3. 10. an organism that can create energy in the absence of solar energy using only CO2, water, and a different energy source
  4. 12. an autotrophic organism, meaning it can make its own food
  5. 13. an organism incapable of making its own food, meaning it must feed on other organism for its energy source
  6. 14. Loss of water through plant leaves
  7. 17. representation of energy flow in food chains and webs
  8. 20. an animal that eats only other animals
  9. 22. a communits and its physical and chemical environment
  10. 24. an organism that relies on primary consumers for its main energy source; third trophic level in a food chain or web
  11. 25. groups of individuals of the same species living in an area at a certain time
  12. 27. biological or living components of the biosphere
  13. 29. made up of multiple food chains, a representation of different feeding relationships among organisms within an ecosystem
  14. 31. study of energy transformation, described by two laws
  15. 33. cellular breakdown of glucose into CO2 and water
  16. 34. category of living things defined by its energy source
  17. 37. Formed between positive end of one water moleculeand negative end of anotherwater molecule; its strenth explains a high boiling point
  18. 38. Cycle of carbon atoms from inorganic form to organic and back, involves photosynthesis/cellular respiration
  19. 39. A molecule with a positive and negative end
  20. 40. Process of releasing carbon from fossil fuels into CO2
  21. 42. Produced from decomposition of plant matter in low oxygen environments such as bogs
  22. 43. number and variety of species in an ecosytem
  23. 44. an organism that relies entirely on producers, or autotrphs, for its energy sources
  24. 45. a plant-eating animal
  25. 46. all living material in an ecosystem measured in dry mass
  26. 47. Material used to restore nutrients in plants
  27. 48. refers to a culture of single species only
  28. 49. Height of water saturation in the ground
Down
  1. 1. Extent to which a surface can reflect light striking it
  2. 2. all of the populations of species in a habitat
  3. 4. process alternative to photosynthesis which converts inorganic chemicals to organic compounds for energy without using solar energy
  4. 5. process of using solar energy, CO2, water, to produce energy, used primarily by green plants
  5. 6. Process of conversion of nitrates back into nitites and nitrogen gas
  6. 7. step-by-step sequence linking orgnaisms that feed on each other
  7. 8. an organism that feeds on detritus
  8. 11. mutation-causing electronmagnetic radiation from the sun, can cause skin burn
  9. 12. A two phase cycle of phosphorus involving biotic and abioticc omponents of the environment
  10. 15. Conversion of atmospheric or dissolved nitrogen into nitrate ions via two separate processes
  11. 16. non-living components of the biosphere
  12. 18. Liquid movement through porous material, such as water through soil particles
  13. 19. waste from plants and animals, including dead remains of organisms
  14. 21. Water cycle; movement through environment from atmosphere to Earth and back
  15. 23. an animal that feeds on plants and animals
  16. 26. the zone around earth, made of 3 structural zones, that harbours life
  17. 28. a species sensitive to changes in an ecosystem, such as frogs or amphibians
  18. 30. Removal of soluble materials by percolation
  19. 32. any system that can adjust to constant changes without major disturbance
  20. 35. a heterotrophic orgnaism that must eat producers or consumers
  21. 36. Cycle involving atmospheric nitrogen gas, inorganic forms, and organic forms in living things
  22. 41. an inorganic molecule, O3, in the atmosphere that screens out UV rays
  23. 45. a place or type of environment suitable for survival or organisms