Chap 3 environment
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Chap 3 environment






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Chap 3 environment Chap 3 environment Presentation Transcript

  • 3.1.3 : Natur alDisaster
  • Floods  Can cause erosion and landslides  Destroy crops, livestocks, properties and spreads disease
  • Drought Land hard and dry Plants will die and will disrupt the food web
  • Volcanic eruption  Choking clouds of dust and poisonous gases  Can cause acid rain and air pollution
  • Earthquakes Destroy building, properties, animals, plants and people Can cause tsunami, hurricanes, typhoons or cyclones.
  • Tsunami
  • Hurricane
  • Typhoons
  • Cyclones
  • 3.2 T he Sour ce ofEnvironmental Pollution
  • Sources ofenvironmentalpollution Uncontrolled used of fossil fuels Disposal of by-products, waste, toxic substance, radioactive substance, smoke and heat from factories Uncontrolled use of chemical fertilizers, pesticides and fungicides in agriculture
  • Sources ofenvironmentalpollution Production of noises, smoke and poisonous gases from vehicles and machinery Disposal of rubbish and sewage Use of chlorofluorocarbon (CFC)
  • Effects ofenvironmentalpollution Human health Loss of habitat and change in natur Extinction of species Loss of economic resources
  • The Greenhouse EffectNatural heating process thatoccurs when certain gases(greenhouse gases) in theEarth’s atmosphere trap heat.
  • Greenhousegases Carbon dioxide – main greenhouse gas which come from the burning of fossils fuels and deforestation Methane, chlorofluorocarbon (CFC), ozone and nitrogen oxides.
  • Global Warming Average global temperature of Earth is rising This could cause extensive melting ice caps and glaciers and raise sea levels It will change weather patterns and effect agricultural output.
  • The Ozone Layer Ozone layer contains a high concentration of ozone and serves to shield living organism from the Sun’s harmful energy Ozone absorbs most of the ultraviolet radiation that enters the atmosphere.
  • Coolant Refrigerators Air-Conditioner CFC’sPropellants Styrofoam Spray cans/ aerosols
  • Effect of OzoneDepletion  Irritation of eyes, throat and lung cancer
  •  Reduce the yield of crops
  •  Sunburn
  •  Skin cancer
  •  Cataract
  •  Mutation - Down’s Syndrome
  •  Impairs crop and tree growth Kill phytoplankton that sustain oceanic life
  • The Idea of Preservation and Conservation of the Environment and Pollution Control Preservation  To keep something the same or prevent it from being damaged. Conservation  Carefully using valuable natural resources that they will be available for as long time as possible
  • The Importance of Proper Management of Natural Resource Forest reserve Develop new technology of fisheries Monitor an opening of a new land Carried out mining activities systematically