Ecology Chapter 3 Study Guide
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Questions and Answers

What is the term for the series of steps in which organisms transfer energy by eating or being eaten?

  • Ecological pyramid
  • Trophic level
  • Food web
  • Food chain (correct)
  • What is the percentage of available energy passed to organisms at the next trophic level according to the 10% rule?

  • 50%
  • 5%
  • 20%
  • 10% (correct)
  • What type of pyramid shows the relative number of individual organisms at each trophic level?

  • Biomass Pyramid
  • Pyramid of Numbers (correct)
  • Energy Pyramid
  • Trophic Pyramid
  • What is the process by which atmospheric nitrogen is converted into ammonia?

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

    What is the process by which water goes from a liquid to a gas, forming clouds?

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

    What is the term for the nutrient that limits an organism's growth when it is in short supply?

    <p>Limiting Nutrient</p> Signup and view all the answers

    What is the term for the building blocks of all living things, making up organic molecules such as lipids, proteins, carbohydrates, and nucleic acids?

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

    What occurs when a large input of a limiting nutrient enters an aquatic ecosystem?

    <p>Algal Bloom</p> Signup and view all the answers

    What is the term for the parts of the Earth that store carbon, such as oceans and fossil fuels?

    <p>Carbon reservoir</p> Signup and view all the answers

    What is the process by which ammonia is converted into nitrite or nitrate?

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

    What is the term for the rate at which organic matter is created by producers?

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

    What is the process by which nitrite or nitrate is converted back into atmospheric nitrogen?

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

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