The cause of lack of oxygen .. Details of the first mass extinction on Earth billions of years ago

The Earth has experienced five massive extinctions. This figure was determined by the fossil record. Thanks to the sustained efforts of scientists, fossils on ancient rocks reveal the oldest dead in the history of the planet, about 2.4 billion years before the first extinction, at the same time. 39, origin of the decrease in the amount of oxygen on the planet.

According to Science Alert, scientists have discovered that the first single cell organisms died more than two billion years ago. According to a recent analysis, these deaths would have caused even more deaths than the extinction of the dinosaurs.

Geologist Malcolm Hodgix of Sanford University said the killing of unicellular organisms had completely damaged microbes from the Earth's surface, which is not recorded in the fossil record .

Before the killing of these organisms, oxygen in the Earth's atmosphere was rare.Most of them were trapped in minerals or in the water.After that, the bacteria marine blue, which had the capacity for photosynthesis, breathed, arrived and the life and diversity of organisms flourished.

For some unknown reason, killing all of these bacteria from the earth's surface has become a disaster and has survived only those of the Belcher Islands at Glacier, Canada, which is the main cause of the rate of death. Hypoxia supposed to be on the surface of the earth.