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Pollution After Japan Tsunami
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Types of pollution caused by the Japan’s Tsunami: › Water pollution
Soil Contaminants and physical contaminants;
Oil spills;› Nuclear pollution
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Water Pollution
A worldwide contamination (developed countries) of the ocean water are due to land runoff, bringing contaminants into the water, such as chemical fertilizers, detergents, sewage, herbicides, etc.
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Water Pollution› Nitrogen-rich fertilizers
increase algae when flowed into the ocean. This latter robs the oxygen from the water causing no marine life possible.
› Everything comes back into the food chain, where we end up consuming ourselves.
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Water Pollution
Other common pollutants would be solid wastes such as plastic bags, and other solid items dumped in to the oceans where aquatic animals mistake them as food.
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Water Pollution
Oil spills (in this case) is due to immersion and damages of cars and boats. › Possible of light oil and heavy oil spills:
Light oil: highly flammable, highly toxic, evaporates quickly
Heavy oil: less toxic, but high life span over water. Hardens on shore coasts, can suffocate aquatic life in water
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Video
This video showing the water washing everything away, but also how people were trying to reach to higher grounds
http://www.youtube.com/user/RussiaToday#p/u/60/vC0OFT8WWHk
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Explanation of the nuclear byproduct
Iodine 129 and Iodine 131› Thyroid constantly absorbs iodine› Cannot tell apart from radioactive and
nonradiactive iodine
Prevention: › Raise concentration of stable iodine in blood› Iodized table salt is useful to maintain health,
but strong but NOT anti-radiation!› Excess or too little is not good for health:
Thyroid disease
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Explanation of nuclear byproducts
Cesium 137› Increase risk of cancer› Higher concentration in muscles than in
bone and fat› Decay time: 30.17 years
Prevention: › Cesium in environment cannot be avoided› Remains short time in body and eliminated
through urine.
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Nuclear Pollution
Contamination of the air: › Forced up to higher atmosphere, particles
would be carried around by the jet stream
Contamination of the ecosystems: › Iodine -131 (through milk, accumulated in
thyroid) Farm in Hitachi, 27 times higher than
acceptable Dairy farm in Iitate, 18 times higher than
acceptable
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Nuclear Pollution
› Cesium 137 (damage cells, increase risk of cancer) 4 times higher than normal
Human contamination: › Over exposure to radioactive environment› Human body a walking contamination
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References
› http://www.greenlivingtips.com/blogs/164/Effects-of-oil-spills.html
› http://www.ehow.com/about_5434352_oil-spills-affect-ocean.html
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References
› http://www.ehow.com/facts_5933006_do-oil-spills-affect-animals_.html
› Soil pollutants: http://ocean.nationalgeographic.com/ocean/critical-issues-marine-pollution/
› Nuclear contamination: http://www.nytimes.com/2011/03/21/world/asia/21japan.html?_r=1&pagewanted=2