environmental awareness by green yatra
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Please check out some of the important Environmental Facts, Do share and spread the Green Voice.TRANSCRIPT
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Environmental Awareness
Payel Bera
ID: GYV11-371
Environmental AwarenessBy:
Payel Bera
ID: GYV11-371
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What is Environment ??
• Environment means our surrounding• Environment includes air water soil Biological environment- flora, fauna noise aesthetics cultural, socio-economic, political conditions
“Environment” Photo. Gev.com 18 April. 2011.
30 Aug. 2011. <http://www.gev.com>
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Why Care for Environment ??
It affects our ability to live on Earth
It affects our health, our economy, our existence
“Environment” Photo. CTSonline.ca
30 Aug. 2011. <http://www.CTSonline.ca>
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Threats to Environment
Air pollution
• Tonnes of pollutants dumped in air by industries, vehicles
• Green coverage decreasing day by day
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Air Pollutants
• CO2
• CO
• Nitrogen oxides (NOx)
• Sulfur oxides
• Volatile Organic Compounds (VOCs)
• Particulate Matter
• Toxic metals- lead, cadmium
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Effects of Air Pollution
• Dust Particles of small sizes damages lungs– causing respiratory symptoms like cough, wheezing, asthma etc
• Excess Carbon Monoxide can cause death
• Excess CO2 , CH4 (Green house gases)
causing Global warming
Polar ice caps melting
Higher sea levels floods“Environment” Photo. Gabicilla.blogspot.com 19 Oct. 2011. 30 Aug. 2011. <http://www.gabicilla.blogspot.com>
“Flood” Photo. Southasia.oneworld.net 26 June. 2009. 30 Aug. 2011. <http://www.southasia.oneworld.net>
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Contd
• Cancer causing potential of diesel exhaust is very high
• Poly aromatic hydrocarbons (PAHs) and particulate matter of diesel exhaust 10 times more potent to cause mutation
• NOx reduces oxygen carrying capacity of blood, can cause cancer, emphysema
• NOx Ozone respiratory problems
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Protect Environment(What can we do?)
• Preventive action is the best
• Spread the awareness among people
• Conduct epidemiological studies– how air quality affects health????????
• Pressurize governments for proper policies for e.g.
- prevent dieselization of private vehicles
• Promote usage of bicycles
“Bicycle Cycling” Photo. bicyclecycling.com
30 Aug. 2011. <http://www.bicyclecycling.com>
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Contd.
• Zoning and transport infrastructure planning
• Introduction of cleaner engines and cleaner fuels like CNG (compressed Natural Gas)
• Stricter regulations for vehicular and industrial emissions and regular compliance checking
• Stop burning of wastes
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Water Pollution
Stop misuse and wastage of water!!!
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Causes
Dhobi Ghat on river plastics and garbages
dumped into river“Washing of our sins and clothes at Ganges” Photo. indianimages.com 30 Aug. 2011. <http://www.indianimagescom>
“Rag pickers collect plastic wastes on the banks of river Yamuna” Photo. 2space.net 19 Oct. 2009. 30 Aug. 2011. <http://www.2space.net>
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Contd.
Clay idols discarded into river
Human corpse discarded into river
“Human corpse” Photo. Forums.earthnetworks.com
30 Aug. 2011. <http://www.forums.earthnetworks.com>
Ecofriends.org 30 Aug. 2011 <http://www.ecofriends.org>
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Oil Spills
A bird covered with oil Oil spill cleaning process“Oil Spill” Photo. En.wikipedia.org
30 Aug. 2011. <http://www.en.wikipedia.org>Anand, Rajat “Oil Spill” Photo. Globalcrisisnews.com 22 May. 2010. 30 Aug. 2011. <http://www.globalcrisisnews.com>
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Water Pollutants
• Heavy metals--- chromium, nickel, copper etc
• Inorganic chemicals– acids, alkalis, inorganic salts
• Nutrients- Nitrogen, Phosphorus
• Disinfection byproduts– trihalomethanes etc
• Microorganisms
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Effects
• Cadmium causes Itai Itai disease
• Mercury causes Minamata disease
• Microorganisms causes diseases like dysentry, diarrohea
• Excess nutrients cause eutrophication
Decreases dissolved oxygen concentration
Affects aquatic life
Itai Itai disease
Minamata disease
Thijssen, Sandy.“Itai itai disease”
Physiology.be 30 Aug. 2011. <http://www.physiology.be>
Shareef, Rishan M..“Minamata disease” mrishaanshareef.blogspot.com 30 Aug. 2011. <http://www.mrishaanshareef.blogspot.com>
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Soil Pollution
It is the degradation of Earth's land surfaces by human activities and
misuse of land resources.
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Causes
• Haphazard disposal of urban and industrial wastes
• Exploitation of minerals
• Harmful agricultural practices
Population increasing
Higher food demand
Intensive agriculture
Forest converted to agricultural fields
monoculture
Excessive use of fertilizers, pesticides, herbicides
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Contd.
Urbanization
Construction, destruction of forests Informal settlements,
poorly maintained sewage pipes
Construction debris
More land required for landfill sites
“Urbanization” Photo. Lv-staff.francisparker.org. 30 Aug. 2011. <http://www.blog.newscollective.com>
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Effects
• Can seriously disrupt the balance of nature
• Pesticides can damage crops
• Some pollutants can get into our systems indirectly from eating vegetables grown in contaminated soil.
• Reduced aesthetic appeal
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What can we do?
• Three R– Reduce, Reuse, Recycle
• Collect degradable and non degradable waste in separate bins
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Contd.
• Soil remediation for polluted soil
• Plant more trees
Afforestation reduces soil erosion
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Worst Environmental disasters
1)Bhopal Gas Tragedy• Dec 2, 1984
• 45 tonnes of poisonous Methyl isocyanate escaped from Union Carbide Plant
• Thousands died within hours
Sinha, Arpita. “Justice still eludes Bhopal gas survivors” Photo. Blog.newscollective.com 14 June. 2010. 30 Aug. 2011. <http://www.blog.newscollective.com>
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2) Chernobyl Disaster
• April 26, 1986
• One reactor of chernobyl power plant of Ukraine exploded
• Massive radiation sent into the atmosphere
Loup, Kibiloki. “Chernobyl Disaster” Photo.
Electrodes.wordpress.com 12 July. 2009. 30 Aug. 2011.
<http://www.electrodes.wordpress.com>
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3) Kuwait Oil well fire• After Gulf War around 600 oil wells were
put ablaze intentionally
• They burnt for 7 months
• Smoke, soot, black rain
• Lakes of oil created
• Animals died
“Kuwait oil well fires 1991” Photo backwoodsweb.com
Aug.1991. 30 Aug. 2011. <http://wwwbackwoodsweb.com>
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Sustainable Development
Development in a way so that resources are able to meet the demands of future generations
“Sustainable Development” Photo. Sthelens.gov.uk. 30 Aug. 2011. <http://www.sthelens.gov.uk>
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About Green Yatra Green Yatra is a registered non-profit trust and a non-government organization (NGO) dedicated to
the protection and conservation of our Mother Earth and it’s environment. Green Yatra was started and
run by individuals who share a strong love and passion for protecting and respecting our only
source of life—Mother Nature. visit us @: www. greenyatra.org
Contact us @: [email protected] Be with us in twitter: https://twitter.com/Greenyatra
Join us face to face us in facebook: http://www.facebook.com/greenyatra