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CLIMATICO CHANGE Ocean acidification

28 diciembre, 2009 Autor: admin


Ocean acidification is a term used to describe the changes in the chemistry of the world’s seas, primarily as a result of burning fossil fuels.


Marine scientists are concerned that changes to the oceans’ pH levels will have severe consequences for marine wildlife and ecosystems





Up to one half of the carbon dioxide (CO2) released by burning fossil fuels over the past 200 years has been absorbed by the world’s oceans



Absorbed CO2 in seawater (H2O) forms carbonic acid (H2CO3), lowering the water’s pH level and making it more acidic



This raises the hydrogen ion concentration in the water, and limits organisms’ access to carbonate ions, which are needed to form hard parts


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