1. Industrial
   1. Power Generation
      1. Fossil Fuel Power Station
         1. Produces
            1. Sulphur Dioxide and Nitrogen Gas
         2. Solution
            1. Stricter Operating Practices and Use Modern Abatement Techniques
      2. Other Industry And Waste Disposol
         1. Fossil Fuel Power Plants
            1. Resources
            2. Poorly Managed Waste Disposal Sites
            3. Effect
            4. Danger To Public Health
         2. Waste Disposal
            1. Landfill
            2. Incineration
2. Road Transport
   1. Motor Vehicle
      1. Primary Pollutants
         1. Petrol-Powered Vehicles
            1. Produces
            2. Carbon Monoxide, Nitric Oxide, Benzene, Particulate Matter And Lead
      2. Solution
         1. Public Transport. "Park And Ride" Schemes, Traffic Restrictions, Planning Guidelines, Encouragement To Cycle And Walk
      3. Secondary Pollutants
         1. Petrol-Engined
            1. Produces
            2. Nitrogen Dioxide And Ozone
3. Demotic
   1. Coal
      1. Lignite
         1. Brown Coal
            1. Domestic Heating
      2. Anthracite
         1. combustion
            1. Efficient And Far Less Black Smoke
      3. Solution
         1. Use Renewable Energy And Enhanced Energy Efficiency Measures In Homes and Offices
4. Agriculture
   1. Nuisance
      1. Sources
         1. Burning Of Agricultural Waste Or Of Crops In The Field And Large Intensive Livestock Units
      2. Effect
         1. Oduor Problems