The last one ended about 11 thousand years ago.
Scientists from the University of Cardiff has offered his version, which explains the appearance of ice ages every 100 000 years.
The details of the work can be read in the journal Geology.
For the last million years, this phenomenon occurs regularly. The process has led to the emergence of the ice sheet in North America, Asia and Europe. However, it is still unknown why it’s “cool” era.
After studying chemical species that have been taken from the bottom of the ocean, the authors found that every 100 000 years of accumulated carbon dioxide during the ice ages. Experts suggest that additional amount from oceans were taken from the atmosphere. Because the temperature on the Earth’s surface has become lower, allowing the glaciers to capture the hemisphere.
Algae is the most important element in the process of photosynthesis. They play an important role in changing the level of carbon dioxide in the atmosphere. Probably, the carbon dioxide returns to the atmosphere when deep water rises.
Now between the two glacial epochs of the global warming. The last one ended about 11 thousand years ago.
