What is the Ice Age?

The

Ice Age is a period, usually about 30 million, but occasionally up to 300 million years, during which ice leaves cover at least the polar regions of the Earth. Individual ice ages have the age of partial ice, called glaciers (when it is cold) or interglacials (if it is warmer) that operates in cycles 40,000 and 100,000 years. When the term 'ice era' is used colloquially, it often concerns these shorter glaciers, a period when ice caps significantly extend the poles and into the hearts of continents such as North America and Eurasia. In this sense, the "Last Ice Age" refers to what is formally called the "last glacial period", which began about 70,000 BP and ended between 15,000 and 10,000 bp. This is the Ice Age, which was experienced by an early man. These include atmospheric composition (greenhouse gases), slight changes in the Earth's orbit known as Milankovitch Cycles, the Earth's Albedo (reflectivity), changes in the location and quantity of bark at different points on the Earth's surface, the change of solar performance, the great impact of the meteor, releaseMethane klatrates and super -chranism. It is known that short -term cycles (40 000/100,000 years) are caused by changes in the Earth's orbit.

Because there is an LED covering Antarctica and Greenland, we are in the middle of the Ice Age, which began 40 million years ago. Ice ages are relatively atypical circumstances for Earth; In addition to six ice ages, the Earth's poles were largely without ice. The fossils of trees were found in a country that was only a few hundred miles from the Poles. Ice ages are about as rare as mass extinction, occurring every 100 million years.

typical average global temperature when the Earth is not about 22 ° C (71.6 ° F) at the Ice Age. During the icy period, about 10 ° C decreases in an average of 12 ° C (53.6 ° F). At the poles, the temperature is deep below freezing almost all the time.

During the ice age, a large amount of water is locked in the ice leaves, which reduces the globalLine levels of the sea. Over the last ice age, the global sea level has been about 100 ft less than it is now, opening large parts of land like the North Sea, and connecting Papua Nová Guinea with Southeast Asia and Russia with Alaska through Bering Land Bridge. Because of the ice age, our ancestors could go to America. It would be more than 10,000 years old than people who traveled to America, with their distant cousins ​​from Europe, Asia and Africa.