Gallery: 7 Biggest Threats to the Environment – Why We Still Need Earth...

 

Oceanic Dead Zones

Along the coasts of heavily populated communities, scientists have found more and more dead zones- areas where depleted oxygen levels cannot support marine life. 146 dead zones were found in the world’s oceans, caused by high levels of chemicals in the waters. North America’s Gulf Coast has a high concentration of dead zones, which causes fish to become unable to reproduce.

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3 Comments

  1. Hari Prasad S December 5, 2014 at 6:06 pm

    This posture will help a lot to those are interested in environmental study

  2. eliakimpereira June 20, 2014 at 2:54 pm

    really good text

  3. rewtmoose April 23, 2012 at 2:46 am

    The Arctic ice cap melting does not effect the sea level, since that ice is already floating in the water. Put a few ice cubes in a glass of water and let them melt, and you’ll see what I’m saying. Only continental ice melting affects the sea level (i.e. Antarctica, glaciers). The problem with the Arctic ice cap melting is disruption of the deep water sea currents which in turn would effect weather systems. For example, the Golf stream could stop, massively degrading the climate of Europe.

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