|Johanneum zur EXPO 2000|
|Die Natur als Erfindung des Menschen|
In fact a 100 million tons of oil are released in the sea per year.The main reasons for this enormous pollution are basically ships, which clean their tanks at sea, breaking pipelines and industries, which are using the sea as a dump for oil and toxic waste. A ton of oil takes an expanse of 3000 m within a very short time and forms a film of 0,3 mm. The results of such pollutions are devastating. Seals, sealions, dolphins and birds are poisoned (apart from that the feathers lose their protective layer by sticking together), whales lose their bearings, the gills of fish stick together. The most serious consequences of an oil slick are the irreparable damages of the sea´s sensitive ecosystem., which is hold by microorganisms. When heavy components of the oil sink to the ground, microorganisms die and the exchange of oxygene becomes impossible. Although international resolutions about the protection of the sea are passed,it´s,in some parts of the oceans still permitted, to lead oil into the sea as long as a distance of several 100 miles to the coastline is kept. It also seems to be impossible, to stop the illegal dumping of oil and toxic waste into the sea.
Autoren: Klasse 11-3 (97/98), teacher Christine Hartmann, Web: Mathias Schönmann
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