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5 Written questions

5 Matching questions

  1. subsoil
  2. humus
  3. soil horizon
  4. mass movement
  5. sediment
  1. a any one of several processes by which gravity moves sediment downhill
  2. b earth materials deposited by erosion
  3. c Dark-colored organic material in soil.
  4. d The layer of soil beneath the topsoil that contains mostly clay and other minerals.
  5. e The layer of soil that differs in color and texture from the layers above or below it.

5 Multiple choice questions

  1. The removal of rock particles by wind, water, ice, or gravity
  2. the loose, weathered material on Earth's surface in which plants can grow
  3. the grinding away of rock by other rock particles carried in water, ice, or wind
  4. The solid layer of rock beneath the soil
  5. rain containing high amounts of chemical pollutants.

5 True/False questions

  1. permeableA measure of how well soil supports plant growth.

          

  2. decomposerSoil organism that breaks down the remains of organisms and digests them.

          

  3. litterthe loose layer of dead plant leaves and stems on the surface of the soil

          

  4. topsoilMixture of humus, clay, and other minerals that forms the crumbly, topmost layer of soil.

          

  5. oxidationthe grinding away of rock by other rock particles carried in water, ice, or wind

          

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