Land Pollution (PowerPoint download)

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					Land Pollution
   Ms. Morris
     Land Pollution Overview
• Historically, land is a dumping ground for
  waste
• 6 billion tons of waste produced each year
  – Agricultural
  – Commercial
  – Industrial
  – Domestic
• Normally, not a problem if disposed of
  properly
    If Improperly Disposed of:
• Household wastes – breeding ground for
  rats, flies, mosquitoes
• One quart used motor oil – contaminates
  100,000’s gallons of drinking water
• Leachate – liquid that results when water
  moves through any non-water media and
  collects contaminants
                       Soils
• Land = earth = soil
• Soil is critical to life
   – Plants get nutrients from soil
   – Animals get nutrients from plants
                            Soil
• Four major components
   –   Mineral particles (rocks and clays)
   –   Organic matter
   –   Water
   –   Air
• Soils vary in different aspects
   –   Color
   –   Thickness
   –   Layers
   –   Amount of clay, salt, & organic matter
                       Soil
• Factors affecting how fast pollutants move
  through soil
  – Soil composition
  – Soil structure
  – Pore sizes
  – Amount of organic matter
• All = Soil profile
    Image: www.lee-county.com



• O Horizon –
  Organic matter

• A Horizon – Top
  soil

• B Horizon –
  Subsoil

• C Horizon –
  Parent Material
                   Questions
•   Define a leachate.
•   List the four major soil components.
•   Explain why soil is critical to all life forms.
•   Turn in to Ms. Morris by the end of the
    day (10 Points).

				
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posted:9/10/2011
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