Dewey Decimal Classification Quiz
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Questions and Answers

Which type of bacteria uses chemical energy to produce carbohydrates?

  • Chemosynthetic bacteria (correct)
  • Autotrophic bacteria
  • Heterotrophic bacteria
  • Photosynthetic bacteria
  • Which category of consumers consumes dead plant and animal remains by chemically breaking down organic matter?

  • Scavengers
  • Detritivores
  • Decomposers (correct)
  • Carnivores
  • What process do algae and plants use to build living tissues through the use of sunlight?

  • Photosynthesis (correct)
  • Chemosynthesis
  • Cellular respiration
  • Fermentation
  • Which of these consumer types primarily eats plant leaves, roots, seeds, or fruits?

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

    Which type of autotroph is known as primary producers due to their role in storing energy that is available for other organisms?

    <p>Primary producers</p> Signup and view all the answers

    What is the primary reason why energy flow in an ecosystem is described as a one-way stream?

    <p>Energy is lost as heat during metabolic processes</p> Signup and view all the answers

    Why are food webs typically more complex than food chains?

    <p>They involve more species and varied interactions</p> Signup and view all the answers

    In ecological terms, why is it difficult to predict the response of food webs to environmental changes?

    <p>Due to the complexity and interdependence of species interactions</p> Signup and view all the answers

    What role do decomposers and detritivores play in the detritus pathway of an ecosystem?

    <p>They convert dead material to detritus which is then eaten</p> Signup and view all the answers

    In an ecological pyramid, why is only a small portion of energy available to organisms at the next trophic level?

    <p>Most energy is used in life processes like respiration, movement, and growth</p> Signup and view all the answers

    What significant contribution did German chemists make to nitrogen utilization?

    <p>They created an industrial process to remove nitrogen gas from the atmosphere and transform it into fertilizer.</p> Signup and view all the answers

    Why is phosphorus considered essential to life?

    <p>It is part of molecules like DNA and RNA.</p> Signup and view all the answers

    What is a limiting nutrient?

    <p>A nutrient that, when in short supply, limits productivity.</p> Signup and view all the answers

    Why do farmers use fertilizers for crop growth?

    <p>To supply essential nutrients like nitrogen, phosphorus, and potassium.</p> Signup and view all the answers

    In aquatic ecosystems, which nutrient is often limiting in the ocean?

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

    In freshwater environments, which nutrient is often limiting?

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

    Which process is responsible for returning carbon dioxide to the atmosphere through the respiration of plants and algae?

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

    What role do certain types of bacteria play in the nitrogen cycle?

    <p>Convert nitrogen gas into ammonia through nitrogen fixation</p> Signup and view all the answers

    Through which mechanism is carbon dioxide exchanged between the atmosphere and the oceans?

    <p>Chemical and physical processes</p> Signup and view all the answers

    What geological process involves carbon dioxide combining with calcium and magnesium to form insoluble compounds?

    <p>Formation of carbonates</p> Signup and view all the answers

    What happens to carbon removed from the geosphere when fossil fuels are burned?

    <p>It is returned to the atmosphere</p> Signup and view all the answers

    Study Notes

    Nitrogen and Phosphorus Cycles

    • German chemists developed an industrial process to remove nitrogen gas from the atmosphere and transform it into usable fertilizer forms.

    Nitrogen Cycle

    • Human activity through this process fixes more nitrogen than all natural processes combined.

    Phosphorus Cycle

    • Phosphorus is essential to life as it is part of molecules such as DNA and RNA.
    • Phosphorus does not cycle through the atmosphere.

    Limiting Nutrients

    • A limiting nutrient is a nutrient whose supply limits productivity.
    • Nutrient limitation in soil is the reason farmers use fertilizers to maximize crop growth.
    • Most fertilizers contain nitrogen, phosphorus, and potassium, which help plants grow better in poor soil.

    Nutrient Limitation in Aquatic Ecosystems

    • In ocean ecosystems, nitrogen is often the limiting nutrient.
    • Seawater contains 0.00005 percent oxygen.
    • In streams, lakes, and freshwater environments, phosphorus is typically a limiting nutrient.

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    Description

    Take this quiz to test your knowledge of the Dewey Decimal Classification system, a method of organizing books in libraries by subject.

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