C1 - How Human Activity Affects the Environment

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  • Human activity is changing the atmosphere
    • We're adding small pollutants into the atmosphere
      • Carbon Dioxide (CO2)
      • Carbon Monoxide (CO)
      • Particulates (e.g. of carbon)
        • Formed from incomplete combustion (can cause damage to lungs and cause difficulty of breathing)
      • Sulfur Dioxide (SO2)
      • Nitrogen Oxides
      • Pollutants come from many sources
        • Burning fuels
          • Power stations
          • Vehicles
        • Released by nature
          • Volcanoes
    • Some pollutant gases are directly harmful to humans
      • Death
      • Disease
        • Carbon monoxide is very harmful as it reduces the amount of oxygen the blood can carry (can lead to flu-like symptoms and eventually death)
          • Death
      • Carbon monoxide is very harmful as it reduces the amount of oxygen the blood can carry (can lead to flu-like symptoms and eventually death)
      • Some pollutants can harm humans indirectly (by damaging our environment)
        • Sulfur dioxide can cause acid rain, which changes the pH of rivers/lakes/oceans and can kill fish that we eat.
        • Other pollutants like carbon dioxide are leading to climate change which causes many problems like sea levels rising.

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