Substances in the Environment
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Questions and Answers

Which of the following is an example of an inorganic substance that is essential to the health and growth of humans and other living things?

  • Carbohydrates
  • Proteins
  • Calcium (correct)
  • Lipids

    • Which of the following is a form of organic matter synthesized by plants and animals?

  • Minerals
  • Calcium
  • Proteins (correct)
  • Lipids

    • Which of the following processes describes the introduction of chemicals to the environment or the change in their concentrations?

  • Biomagnification through food chains
  • Uptake of materials by living things
  • Dilution in streams (correct)
  • Absorption of materials by living things

    • How do living things uptake materials?

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

    Which of the following is evidence that some materials are difficult for organisms to obtain?

    <p>Limited availability</p> Signup and view all the answers

    Which of the following substances is known to enhance plant growth but can limit growth if too little or too much is available?

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

    Which of the following is an example of an inorganic substance that is essential to the health and growth of humans and other living things?

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

    Which of the following processes describes the dilution of chemicals in streams?

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

    Which of the following substances is difficult for organisms to obtain?

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

    Which of the following describes the uptake of materials by living things through absorption?

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

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