Ocean dead zones related to Human's activities
According to the official explaining, “Dead
zones, also known as hypoxia zones, are areas in the ocean that lack sufficient
levels of dissolved oxygen for fish and other wildlife to survive.” The dead zones are caused by lots of factors,
but the most important factor is human’s activities.
Currently, the size and quantity of dead zones is doubling
every ten years. And human’s activities are the drivers to most of dead zones. Burning
fossil fuels is a good example. Carbon dioxide is emitted into the air
which makes the plant warmer and it is called “global warming”. Global warming will cause ocean dead zones. Also,
due to the pollution from the cars, industries, the content of Nitrogen and Phosphorus
in the ocean increases with a high speed. Lots of animals have got away from
the dead oceans zone, however, some animal with slow act have died out.
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