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  • Question
  • The main source of organic matter in soil is


  • Options
  • A. bacteria
  • B. fungi
  • C. water
  • D. plants

  • Correct Answer
  • plants 

    Explanation

    The main source of organic matter in soil is the plant and animal tissue that decompose at each level of breakdown.

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    General Science problems


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    • 1. A grouping of stars that resembles a picture

    • Options
    • A. Galaxy
    • B. Asteroid
    • C. Constellation
    • D. Milkyway
    • Discuss
    • 2. An advantage to group therapy is that groups

    • Options
    • A. social support
    • B. less time
    • C. economical
    • D. None of the above
    • Discuss
    • 3. A doctor who specializes in skin diseases

    • Options
    • A. Nephrology
    • B. Dermatology
    • C. Paediatrician
    • D. Rheumatology
    • Discuss
    • 4. The outermost layer of the earth is called

    • Options
    • A. Core
    • B. Mantle
    • C. Crust
    • D. Inner core
    • Discuss
    • 5. One of the following is not a function of bones

    • Options
    • A. Protection of vital organs
    • B. Secretion of hormones for calcium regulation in blood and bones
    • C. Place for muscle attachment
    • D. Production of blood corpuscles
    • Discuss
    • 6. Research designed to evaluate theories is called
    • Discuss
    • 7. The study of Brain is called as

    • Options
    • A. Neurology
    • B. Nephrology
    • C. Phrenology
    • D. Neurobiology
    • Discuss
    • 8. One who eats everything

    • Options
    • A. Carnivores
    • B. Omnivores
    • C. Herbivores
    • D. Omniscient
    • Discuss
    • 9. Minamata disease is a nervous disorder caused by eating fish, polluted with _____

    • Options
    • A. Iron
    • B. Mercury
    • C. Lead
    • D. Nickel
    • Discuss
    • 10. Fog, clouds, mist are examples of _______.

    • Options
    • A. Aerosol
    • B. Solid sol
    • C. Foam
    • D. Gel
    • Discuss


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