Chap 3 environment
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Transcript of Chap 3 environment
3.1.3 : Natural 3.1.3 : Natural DisasterDisaster
FloodsFloods
Can cause Can cause erosion and erosion and landslideslandslides
Destroy crops, Destroy crops, livestocks, livestocks, properties and properties and spreads diseasespreads disease
Drought Drought
Land hard and Land hard and drydry
Plants will die Plants will die and will disrupt and will disrupt the food webthe food web
Volcanic eruptionVolcanic eruption
Choking Choking clouds of dust clouds of dust and poisonous and poisonous gasesgases
Can cause Can cause acid rain and acid rain and air pollutionair pollution
Earthquakes Earthquakes
Destroy building, Destroy building, properties, animals, properties, animals, plants and peopleplants and people
Can cause Can cause tsunami, tsunami, hurricanes, hurricanes, typhoons or typhoons or cyclones.cyclones.
Tsunami Tsunami
Hurricane Hurricane
Typhoons Typhoons
Cyclones Cyclones
3.2 3.2 The Source of The Source of Environmental Environmental PollutionPollution
Sources of environmental Sources of environmental pollutionpollution
Uncontrolled used of Uncontrolled used of fossil fuelsfossil fuels Disposal of by-products, waste, toxic Disposal of by-products, waste, toxic
substance, radioactive substance, substance, radioactive substance, smoke and heat from smoke and heat from factoriesfactories
Uncontrolled use of chemical Uncontrolled use of chemical fertilizers, pesticides and fungicides fertilizers, pesticides and fungicides in in agricultureagriculture
Sources of environmental Sources of environmental pollutionpollution
Production of noises, smoke and Production of noises, smoke and poisonous gases from poisonous gases from vehicles vehicles and machineryand machinery
Disposal of Disposal of rubbish and sewagerubbish and sewage Use of chlorofluorocarbon Use of chlorofluorocarbon (CFC)(CFC)
Effects of environmental Effects of environmental pollutionpollution
Human healthHuman health Loss of habitat and change in natLoss of habitat and change in nat
ureure Extinction of speciesExtinction of species Loss of economic resourcesLoss of economic resources
The Greenhouse The Greenhouse EffectEffect
Natural heating processNatural heating process that that occurs when certain gases occurs when certain gases (greenhouse gases)(greenhouse gases) in the in the Earth’s atmosphere Earth’s atmosphere trap heattrap heat..
Greenhouse gasesGreenhouse gases Carbon dioxideCarbon dioxide – main – main
greenhouse gas which come greenhouse gas which come from the burning of fossils fuels from the burning of fossils fuels and deforestationand deforestation
Methane, chlorofluorocarbon Methane, chlorofluorocarbon (CFC), ozone and nitrogen (CFC), ozone and nitrogen oxidesoxides..
Global WarmingGlobal Warming
Average Average global temperatureglobal temperature of Earth of Earth is is risingrising
This could cause extensive melting This could cause extensive melting ice caps and glaciers and raise sea ice caps and glaciers and raise sea levelslevels
It will It will change weather patternschange weather patterns and and effect agricultural output.effect agricultural output.
The Ozone LayerThe Ozone Layer
Ozone layer contains a high Ozone layer contains a high concentration of concentration of ozoneozone and serves and serves to shield living organism from the to shield living organism from the Sun’s harmful energySun’s harmful energy
Ozone absorbs most of the Ozone absorbs most of the ultraviolet radiation that enters the ultraviolet radiation that enters the atmosphere.atmosphere.
PropellantsSpray cans/
aerosols
Styrofoam
Coolant Refrigerators
Air-Conditioner
CFC’s
Effect of Ozone DepletionEffect of Ozone Depletion
Irritation of eyes, throat and lung cancerIrritation of eyes, throat and lung cancer
Reduce the yield of cropsReduce the yield of crops
Sunburn Sunburn
Skin cancerSkin cancer
Cataract Cataract
Mutation - Down’s SyndromeMutation - Down’s Syndrome
Impairs crop and tree growthImpairs crop and tree growth Kill phytoplankton that sustain oceanic Kill phytoplankton that sustain oceanic
lifelife
The Idea of Preservation and The Idea of Preservation and Conservation of the Environment Conservation of the Environment
and Pollution Controland Pollution Control
Preservation Preservation To keep something the same or To keep something the same or
prevent it from being damaged.prevent it from being damaged.
ConservationConservation Carefully using valuable natural Carefully using valuable natural
resources that they will be available resources that they will be available for as long time as possiblefor as long time as possible
The Importance of Proper The Importance of Proper Management of Natural Management of Natural
ResourceResource
Forest reserveForest reserve Develop new technology of fisheriesDevelop new technology of fisheries Monitor an opening of a new landMonitor an opening of a new land Carried out mining activities Carried out mining activities
systematicallysystematically