Soil as a Vital Resource in the Philippines
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Questions and Answers

Which of the following is NOT a basic need derived from soil?

  • Clothes
  • Shelter
  • Food
  • Water (correct)

    • What is the emphasis in the study of soil?

  • To conserve it for posterity
  • To develop ways for its effective use and extract medium benefits (correct)
  • To understand its properties and potentials
  • To map its classification

    • How long does it take for natural processes to form an inch of soil?

  • 100 years (correct)
  • 200 years
  • 10 years
  • 50 years

    • What is soil science?

    <p>The study of soil formation, classification, and mapping</p> Signup and view all the answers

    What are the basic sciences applied in the study of soil?

    <p>Chemistry, physics, geology, and biology</p> Signup and view all the answers

    Which type of rock is formed from solidified molten magma within or outside the earth's crust?

    <p>Igneous rock</p> Signup and view all the answers

    What is the classification of igneous rocks based on their mineralogical composition?

    <p>Acidic, basic, intermediate, and ultra basic</p> Signup and view all the answers

    Which type of igneous rock has a mineralogical composition with less than 44% silica?

    <p>Ultra basic or ultramafic igneous rock</p> Signup and view all the answers

    Which type of rock is formed from naturally occurring substances with more or less definite chemical composition and specific physical properties?

    <p>Mineral rock</p> Signup and view all the answers

    Which type of igneous rock is fine-grained?

    <p>Extrusive igneous rock</p> Signup and view all the answers

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