Food Security
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Questions and Answers

What percentage of the world's grain production is used to produce meat that many poor people cannot afford?

  • 5%
  • 50%
  • 38%
  • 33% (correct)

    • What is the projected population of the earth by 2050?

  • 5 billion people
  • 9.7 billion people (correct)
  • 7 billion people
  • 10 billion people

    • What are the factors that can lead to food insecurity?

  • Bad weather, climate change, and poverty (correct)
  • Bad weather, war, and poverty
  • Bad weather, war, and climate change
  • War, climate change, and poverty

    • What are mineral reserves?

    <p>Minerals that can be extracted profitably</p> Signup and view all the answers

    What are the five choices when a mineral resource becomes economically depleted?

    <p>Recycle or reuse, waste less, use less, find a substitute, or do without</p> Signup and view all the answers

    What happens when a mineral becomes scarce?

    <p>Its market price increases</p> Signup and view all the answers

    Which of the following is NOT one of the five choices when a mineral resource becomes economically depleted?

    <p>Increase extraction efforts</p> Signup and view all the answers

    What are some of the minerals that are relatively scarce?

    <p>Manganese, Chromium, and Cobalt</p> Signup and view all the answers

    What happens when the market price of a scarce mineral increases?

    <p>It becomes less profitable to extract less concentrated reserves</p> Signup and view all the answers

    Which mineral is NOT obtained profitably from seawater?

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

    What minerals are found in sediments along the shallow continental shelf and adjacent shorelines?

    <p>Copper, iron, and tungsten</p> Signup and view all the answers

    What minerals are especially rich in hydrothermal ore deposits known as black smokers?

    <p>Copper, lead, and zinc</p> Signup and view all the answers

    Which type of mining is mostly used to mine coal and various minerals on mountainous terrain?

    <p>Contour strip mining</p> Signup and view all the answers

    What is left after contour strip mining if the land is not restored?

    <p>A series of spoils banks and a highly erodible bank of soil and rock called a highwall</p> Signup and view all the answers

    What is used to remove minerals in area strip mining?

    <p>Power shovels</p> Signup and view all the answers

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