Open Sea and Ocean Zones
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Questions and Answers

What is the characteristic of neustons according to the text?

  • They are endemic to a specific lake
  • They cling to other plants or any other surface
  • They are attached to bottom sediments
  • They rest or swim on the surface (correct)
  • In which layer of stratification do you find the warm, lighter, circulating surface layer?

  • None of the layers described
  • Epilimnion (correct)
  • Hypolimnion
  • Thermocline
  • What causes Eutrophic lakes to be overnourished?

  • Nutrients like nitrogen and phosphorus (correct)
  • High salt concentrations
  • Endemic fauna
  • Low nutrient concentrations
  • Which type of lake is characterized by low pH, high humic acid content, and brown waters?

    <p>Dystrophic lakes</p> Signup and view all the answers

    What defines Desert salt lakes according to the text?

    <p>Low evaporation and high salt concentrations</p> Signup and view all the answers

    Where do benthos organisms typically attach themselves?

    <p>To bottom sediments</p> Signup and view all the answers

    Which region of a lake experiences a sharp drop in temperature between the warm top layer and the cold bottom layer?

    <p>Thermocline</p> Signup and view all the answers

    What characterizes endemic lakes according to the text?

    <p>They are ancient, deep, and have endemic fauna</p> Signup and view all the answers

    What happens to the top waters of lakes during summer according to the text?

    <p>They become warmer than the bottom waters</p> Signup and view all the answers

    What is a common source of nutrients for Eutrophic lakes mentioned in the text?

    <p>Agricultural run-off and municipal sewage discharge</p> Signup and view all the answers

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