Dead waters are spreading

The conclusion of a group of US and Swedish scientists shows that dead sea areas - where aquatic species cannot survive due to lack of oxygen - are continuing to expand over the past 50 years and attack about 400 predestined regions. Marine world.

According to researcher Robert Diaz of the US Marine Science Institute and researcher Rutger Rosenberg of the University of Gothenburg, Sweden, since the 1960s, the number of dead seas has doubled every 10 years and now has a total area up to 245,000 km ² .

Researchers have confirmed that the formation of dead sea areas is getting worse, mainly due to the burning of fossil fuels and the environmental pollution originating from heavily polluted rivers flowing into the sea. .

The phenomenon of dead sea was first recorded in the Adriatic coast in the 1950s. Industrial pollution as well as phosphorus and nitrogen-contaminated river systems poured into the sea. When the algae die and sink to the sea floor, it reduces the amount of oxygen in the water

Because of the absence of oxygen, fish and crustaceans, as well as aquatic life, feed these organisms, and the dead sea forms. In addition, rising temperatures due to global warming tend to increase the number of dead seas.