Chapter 3.2 Feeding Relationships & Energy Key Terms

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Across
  1. 6. an organism that maintains its body temperature by exchanging heat with its surroundings, which means that their body temperature varies with the environment temperature.
  2. 10. a diagram that shows the amount of energy in each trophic level of a food chain. Shown with various units of energy such as joules, KJ, or calories.
  3. 11. a diagram that shows the number of organisms in each trophic level of a food chain
  4. 13. (GPP) the amount of light or chemical energy fixed by producers in a given length of time in a given area, usually given as units of energy per unit area per unit of time (for example, kJ/m2/year)
  5. 14. an organism which is able to use light energy to synthesize organic compounds.
  6. 15. the layer of water in the ocean where there is a low level of light which is not sufficient for photosynthesis, it is sometimes also referred to as the twilight zone.
  7. 16. measures the color of the surface layers of water and follows the changes in chlorophyll concentration and, therefore, the amount of producers present.
  8. 17. an organism that maintains its body temperature by generating heat in metabolic processes, which means that they must expend energy maintaining their body temperature.
Down
  1. 1. the light intensity at which the rate of photosynthesis and the rate of respiration are equal
  2. 2. the process by which a body of water becomes enriched in dissolved nutrients (such as nitrates and phosphates) that stimulate the growth of producers, usually resulting in the depletion of dissolved oxygen.
  3. 3. (NPP) the amount of energy that is left over after respiration to be made into new plant biomass
  4. 4. an organism which is able to use chemical energy to synthesize organic compounds.
  5. 5. defined as the energy supply available to trophic level, divided by the energy consumed by trophic level and expressed as a percent.
  6. 7. the upper area/layer, with sufficient light for photosynthesis (upper 80m)
  7. 8. a diagram that shows the biomass (glucose) in each trophic level of a food chain. Shown with various units but most common is grams of carbon per meter squared.
  8. 9. the process by which all living organisms release energy from their food by oxidizing glucose
  9. 11. zone the surface layers of the ocean which receives sunlight
  10. 12. an organism that is adapted to survive extreme temperatures, pressure, salinity, or pH