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POLLUTION
PRESENTED BY
1.Megha Varshini. C
2.Jecitha Annie. P
3.Thicchitha.J
4.Sangeetha
SYNOPSIS
• Pollution
• Types of pollution
• Definition , Sources , Effects , Prevention - 1.Land
2 .Water
3. Air
4.Noise
POLLUTION
• Introduction of substances that cause
adverse changes in the environment
and living entities
• Substance that cause pollution -
pollutants
.
AIR POLLUTION
.
AIR POLLUTION
• Release of pollutants into the air
• Pollutant-gases, particles , biological
moleclues , etc …
• Harmful to human health and
environment
• Ex : Industrial effluence , Vehicle emision
TYPES OF AIR POLLUTANTS
• Primary pollutant
• Secondary pollutant
PRIMARY POLLUTANT
• The agents which affect the quality of air- primary
pollutant
• Direct source
• EX:CO,Sox,SO2,NOX,aerosols(dust,ash)
SECONDARY POLLUTANT
• Agents produced from the reactant of primary
pollutants, that cause air pollution
• Indirect source
• Ex : smog(formed as a result of interaction of primary
pollutant with molecular oxygen , hydro carbon ,
water),ozone(reaction of NO , CO , in presences of
sunlight)
CAUSES
Burning of fossil fuels- SO2,CO
Automobiles- CO2,CO,NOX,SPM
Agricultural activities- insecticides , fertilizers , burning
,(ammonia)
Factories and industries- CO,NOX,O3,NO2
Mining activities- mercury,lead,SO2,NOX(spread by wind)
Domestic sources- smoking , LPG , artificial fragrance
EFFECTS
Diseases- lung cancer , heart disease , respiratory
problem
Global warming- melting of glaciers , increase in
sea level and earth temperature
Acid rain- skin disease , asthma , corrosion of
structure , destroy insects
Ozone layer depletion- uv rays enter the
atmosphere , skin cancer
PREVENTIONS
Afforestation
Limiting the industrial emissions
Avoid incineration
Reduce the use of automobiles
Avoid use of air conditioner
Switch to environmentally sustainable alternatives( wind
power, solar power)
AIR POLLUTION DISASTERS
1. BHOPAL GAS TRAGEDY
• December 1984
• Union Carbide India Limited
• Methyl isocyanate
• 1000 of death were recorded
2. GREAT SMOG OF
LONDON
December 1952
Cold season- used coal to heat
there homes
The resultant smoke combined
with the fog – zero visibility
Harmful and toxic air filled with
pollutants
3.TAJ MAHAL
Sulphur dioxide,
NOx emission and
primarily carbon-
based particles
Corroded and
damaged the white
facade into yellow
sheen
Selecting
visual aids
Enhancing your presentation
Effective delivery techniques
This is a powerful tool in public
speaking. It involves varying pitch, tone,
and volume to convey emotion,
emphasize points, and maintain
interest:
• Pitch variation
• Tone inflection
• Volume control
Effective body language enhances your
message, making it more impactful and
memorable:
• Meaningful eye contact
• Purposeful gestures
• Maintain good posture
• Control your expressions
Be a part of Solution ,
not a Pollution

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POLLUTION.pptxUpload a presentation to download Land pollution

  • 1. POLLUTION PRESENTED BY 1.Megha Varshini. C 2.Jecitha Annie. P 3.Thicchitha.J 4.Sangeetha
  • 2. SYNOPSIS • Pollution • Types of pollution • Definition , Sources , Effects , Prevention - 1.Land 2 .Water 3. Air 4.Noise
  • 3. POLLUTION • Introduction of substances that cause adverse changes in the environment and living entities • Substance that cause pollution - pollutants
  • 4. .
  • 6. AIR POLLUTION • Release of pollutants into the air • Pollutant-gases, particles , biological moleclues , etc … • Harmful to human health and environment • Ex : Industrial effluence , Vehicle emision
  • 7. TYPES OF AIR POLLUTANTS • Primary pollutant • Secondary pollutant
  • 8. PRIMARY POLLUTANT • The agents which affect the quality of air- primary pollutant • Direct source • EX:CO,Sox,SO2,NOX,aerosols(dust,ash)
  • 9. SECONDARY POLLUTANT • Agents produced from the reactant of primary pollutants, that cause air pollution • Indirect source • Ex : smog(formed as a result of interaction of primary pollutant with molecular oxygen , hydro carbon , water),ozone(reaction of NO , CO , in presences of sunlight)
  • 10. CAUSES Burning of fossil fuels- SO2,CO Automobiles- CO2,CO,NOX,SPM Agricultural activities- insecticides , fertilizers , burning ,(ammonia) Factories and industries- CO,NOX,O3,NO2 Mining activities- mercury,lead,SO2,NOX(spread by wind) Domestic sources- smoking , LPG , artificial fragrance
  • 11. EFFECTS Diseases- lung cancer , heart disease , respiratory problem Global warming- melting of glaciers , increase in sea level and earth temperature Acid rain- skin disease , asthma , corrosion of structure , destroy insects Ozone layer depletion- uv rays enter the atmosphere , skin cancer
  • 12. PREVENTIONS Afforestation Limiting the industrial emissions Avoid incineration Reduce the use of automobiles Avoid use of air conditioner Switch to environmentally sustainable alternatives( wind power, solar power)
  • 13. AIR POLLUTION DISASTERS 1. BHOPAL GAS TRAGEDY • December 1984 • Union Carbide India Limited • Methyl isocyanate • 1000 of death were recorded
  • 14. 2. GREAT SMOG OF LONDON December 1952 Cold season- used coal to heat there homes The resultant smoke combined with the fog – zero visibility Harmful and toxic air filled with pollutants
  • 15. 3.TAJ MAHAL Sulphur dioxide, NOx emission and primarily carbon- based particles Corroded and damaged the white facade into yellow sheen
  • 17. Effective delivery techniques This is a powerful tool in public speaking. It involves varying pitch, tone, and volume to convey emotion, emphasize points, and maintain interest: • Pitch variation • Tone inflection • Volume control Effective body language enhances your message, making it more impactful and memorable: • Meaningful eye contact • Purposeful gestures • Maintain good posture • Control your expressions
  • 18. Be a part of Solution , not a Pollution