Unit 6Pollution
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Transcript of Unit 6Pollution
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Air Pollution
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Pollution
Pollution refers to the substance in air, waterand land, whether they occur from human
activity or occur naturally which have
adverse effects on human and on theenvironment
Pollutant
It is a substance or energy introduced intothe environment that has undesired effects,
or adversely affects the environment
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Types of pollutants
Degradable or non persistent pollutants
Slowly degradable or persistent pollutants
Non-degradable pollutants
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Pollution
Types
Air
Soil Water
Noise
Thermal Nuclear
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Air Pollution
Air Pollution is the contamination of the
atmosphere by gaseous, liquid, or solid
wastes or by-products that can endangerhuman health and the health and welfare of
plants and animals, or can attack materials,
reduce visibility, or produce undesirable
odours
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Causes
Natural Causes
Human Activities
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Natural Causes
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Human Activities
Smokestacks of Factories/
Industries / Powerplants
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Vehicular Pollution
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Domestic Causes
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Effects Of Air Pollution
On Humans: Irritation of eyes, nose, mouth and throat
Asthma attacks
Respiratory symptoms such as coughing and wheezing
Increased respiratory disease such as bronchitis
Reduced energy levels
Headaches and dizziness
Disruption of endocrine, reproductive and immune systems
Neurobehavioral disorders
Cardiovascular problems
Cancer
Reduced lung functioning
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On Plants Acid rain can kill trees, destroy the leaves of plants, can infiltrate soil by
making it unsuitable for purposes of nutrition and habitation
Ozone holes in the upper atmosphere can allow excessive ultraviolet
radiation from the sun to enter the Earth causing damage to trees and
plants
Ozone in the lower atmosphere can prevent plant respiration by blocking
stomata (openings in leaves) and negatively affecting plants
photosynthesis rates which will stunt plant growth; ozone can also decay
plant cells directly by entering stomata
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On Animals
Acid rain destroys fish life in lakes and streams
Excessive ultraviolet radiation coming from the sun throughthe ozone layer in the upper atmosphere which is eroded by
some air pollutants, may cause skin cancer in wildlife
Ozone in the lower atmosphere may damage lung tissues ofanimals
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On Materials
Air Pollutants breakdown the exterior pain on cars and
houses
Air Pollutants have discolored monuments, historic
buildings, marble statues and other heritage and natural
beauty sites
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Prevention/Control Of Air
Pollution
Car Pool
Public Transport
Ride a bike Vehicle Care
Whenever Possible
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Use Alternate energy
source like solar energy,
hydroelectric energy,
and wind energy.
Use recyclable
Materials
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