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Soil Science

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  • Define Leaching
    The loss of nutrients and materials that have been dissolved as they move through soil
  • Which soil horizon is commonly called the subsoil?
    O Horizon
    C Horizon
    B Horizon
    A Horizon
  • Which soil component makes up about 5% of an ideal soil?
    organic matter
    air
    mineral
    water
  • Which soil component makes up about 25% of an ideal soil?
    air
    water and air
    water
    organic matter
  • What is the area between soil particles called
    humus
    pore space
    horizons
    soil profile
  • Define Weathering
    Wear away or change the appearance or texture of something by long exposure
  • Which soil horizon is also known as "bedrock"
    A Horizon
    B Horizon
    R Horizon
    C Horizon
  • Which soil horizon is contains decomposed plants and animals?
    C Horizon
    A Horizon
    O Horizon
    B Horizon
  • Which of the following is NOT a type of soil particle?
    rock
    silt
    sand
    clay
  • Which soil particle is the largest in size?
    rock
    clay
    silt
    sand
  • Which soil particle is the smallest in size?
    clay
    silt
    sand
    rock
  • Which soil component makes up about 45% of an ideal soil?
    organic matter
    water
    air
    mineral
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