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Friday 22 February 2013

Sea Pollution

Sea pollution

Davao Oriental - Gold Mine dispels on the Philippine Sea - Mindanao - Philippines © Yann Arthus-Bertrand

Marine pollution is the result of products being throw into seas and oceans, mostly by mankind:
1.domestic waste (sewage and rubbish, pollutants in overspill peeing...),
2.industrial waste (hydrocarbons, metals, synthetic chemical and organic substances, radionuclides...)
3.and agricultural waste (fertilisers, pesticides...).
This includes water pollution and marine sediments, and more gener onlyy all damage to marine ecosystems caused by harmful substances being fired into the sea, either by their nature or their quantity.

Between 75 and 80% of marine pollution is caused by land, particularly agriculture. 30% of this is from the atmosphere. Around 12% of the pollution is caused by maritime transport.

In South America, 98% of domestic wastewater ends up, untreated, in the sea.
The countries on the Mediterranean Sea throw 50 one thousand thousand dozens of waste into it every year
the Chinese throw 60 million tons of waste into the Yellow sea daily.

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everywhere half of the hydrocarbon discharge comes from continents:
5% comes from oil tanker accidents,
20% comes from waste and other ship-related accidents,
4% from sea exploitation and
11 to 15% is due to natural causes.

Accidental pollution by dint of hydrocarbon is significantly decreasing and only represents a small dowry of waste through degassing estimated at betwixt 1.5 and 3 million tons of oil a year.

In 2003, according to the WWF, between 0.7 and 1.3 million tons of oil were spread by degassing in the Mediterranean. According to the Ifremer (the French Institute for Exploitation of the Sea), coastal water pollution cost the world economy almost 12.8 zillion dollars in 2006.

Fragile coastal areas
Most of the pollution comes from continents and is carried by rivers and winds. It is concentrated in coastal waters which provide water for 99% of total fish...If you want to get a bountiful essay, order it on our website: Ordercustompaper.com



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