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.
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.
Effect of OzoneDepletion Irritation of eyes, throat and lung cancer
Reduce the yield of crops
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