The mass extinction event at the end of Permi period about 252 million years ago can be repeated due to 'poison soup' but modern people enough to stop it. Scientific informationPhys.org (England) on September 17 The elevation almost eradiced the Earth end of Permi to repeat. The Great Extraordinary Permi is associated with giant greenhouse gas emissions, the earth temperature rises, making most of the animals on the land and in the ocean disappear. A study was studied by Professors Tracy Frank and Chris Fielding has been determined to identify one of the causes of the above Exhaustion: The explosion of toxic bacteria turns air and water into a "poisonous soup", killing animals
. Escape of blooming algae kill many aquatic animals. Photo: Phys.org In a healthy ecosystem, algae and bacteria that emit oxygen supply for aquatic animals
But when the number of algae and bacteria exceeded control, they will reduce the amount of oxygen in the water, even release the toxins. Australia, the researchers found that the events of blooming algae happened in the end of the end of Permi. "Poisonous soup" strongly developed if the factors supported, including greenhouse gas emissions , High temperature and abundant nutrients. Volcanic eruptions contribute to promoting the first two factors, while deforestation promotes the third factor. When plants are swept, soils are drifted into the river, lake, providing all the nutrients needed to develop bacteria. According to Professor Frank, now, we are also witnessing a variety of toxic algae in rivers and lakes are related to increased temperatures and changes in plant populations that contribute nutrition for freshwater environment. Climate change combined with water pollution, mainly from agriculture and destruction Forests, causing toxic algae to develop strongly. Researchers showed that the increase in temperatures at the end of Perma period coincided with the increase in forest fires. And now, severe forest fires like in California - America are increasingly popular. These are the clear symptoms of an unbalanced ecosystem
However, unlike past greats, people today can prevent toxic algae by keeping clean water sources and Control the amount of greenhouse gas emissions, prevent a similar extinction. According to Pham Nghia / Workers . Dịch vụ:
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