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15.3 Oceanic Productivity<br />
Primary productivity- the production of organic compounds from inorganic substances through photosynthesis or chemosynthes...
Photosynthesis- the use of light energy to convert water and carbon dioxide into energy-rich glucose molecules.<br />
Chemosynthesis- the process by which certain microorganisms create organic molecules from inorganic nutrients using chemic...
Two factors influence a region’s photosynthetic productivity: the availability of nutrients and the amount of solar radiat...
The availability of solar energy is what limits photosynthetic productivity in polar areas. <br />
Productivity in tropical regions is limited by the lack of nutrients <br />
In temperate regions, which are found at mid-latitudes, a combination of sunlight and nutrient supply controls productivit...
Trophic Levels- a nourishment level un a food chain; plant and algae producers constitute the lowest level, followed by he...
A food chain is a sequence of organisms through which energy is transferred, starting with the primary producer. <br />
Animals that feed through a food web rather than a food chain are more likely to survive because they have alternate foods...
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15 3 Powerpoint Earth

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15 3 Powerpoint Earth

  1. 1. 15.3 Oceanic Productivity<br />
  2. 2. Primary productivity- the production of organic compounds from inorganic substances through photosynthesis or chemosynthesis.<br />
  3. 3. Photosynthesis- the use of light energy to convert water and carbon dioxide into energy-rich glucose molecules.<br />
  4. 4. Chemosynthesis- the process by which certain microorganisms create organic molecules from inorganic nutrients using chemical energy.<br />
  5. 5. Two factors influence a region’s photosynthetic productivity: the availability of nutrients and the amount of solar radiation, or sunlight.<br />
  6. 6. The availability of solar energy is what limits photosynthetic productivity in polar areas. <br />
  7. 7. Productivity in tropical regions is limited by the lack of nutrients <br />
  8. 8. In temperate regions, which are found at mid-latitudes, a combination of sunlight and nutrient supply controls productivity.<br />
  9. 9. Trophic Levels- a nourishment level un a food chain; plant and algae producers constitute the lowest level, followed by herbivores and a series of carnivores at progressively higher levels<br />The transfer of energy between trophic levels is very inefficient<br />
  10. 10. A food chain is a sequence of organisms through which energy is transferred, starting with the primary producer. <br />
  11. 11. Animals that feed through a food web rather than a food chain are more likely to survive because they have alternate foods to eat should one of their food sources diminish of disappear<br />

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