Humans and the environment

HideShow resource information
  • Created by: Bill Roan
  • Created on: 21-04-13 14:59
View mindmap
  • Humans and the environment (4.2-4.5)
    • Air pollution
      • Burning fuels can produce sulfur dioxide and other gases.
        • Via cars and power stations.
        • Forms acid rain
          • Acid rain kills organisms.
          • Changes soil pH, damaging roots.
            • Habitats ruined.
              • Untitled
    • Deforestation and peat destruction
      • Deforestation is needed for timber/land/agriculture
      • Causes....
        • More CO2 released into atmosphere.
        • Less photosynthesis.
        • Less biodiversity due to habitat loss.
      • Purpose...
        • Crops can be grown to produce biofuels.
        • Increase in cattle and rice fields for food.
      • Peat bogs also release CO2 when destructed.
    • Land and water pollution
      • Sewage must be treated properly to remove gut parasites and toxic chemicals
      • Household and industrial waste is put in landfills
        • Toxic chemicals leak out. Hazardous.
      • Herbicides and pesticides are poisons. Many are washed into rivers.
        • Same for fertilisers.
    • Global warming
      • In nature CO2 is released by respiration and removed by photosythesis.
        • Balanced.
          • Untitled
      • Untitled
  • Changes soil pH, damaging roots.
    • Habitats ruined.
      • Untitled
  • Causes....
    • More CO2 released into atmosphere.
    • Less photosynthesis.
    • Less biodiversity due to habitat loss.

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Human impact on the environment resources »