Biosphere - an active shell of the Earth.Today, when scientific thought accelerates progress, acquire a special meaning knowledge of the processes of life on Earth.An important role in these processes operate organisms.
During the existence of our planet, these organisms have filled the atmosphere with oxygen and nitrogen.Largely freed her from the carbon dioxide formed deposits of natural gas and oil.
In the development of our planet formed an unusual shell - Biosphere.Biosphere - an area of active life.
name of this shell came up with Eduard Suess.Borrowing in the Greek word «bios» (life), in 1875 he entered the geological term - the biosphere.
Biosphere - is one of the geological layers of the earth.
It includes both living organisms and they modified the habitat.
can be assumed that if the planet the presence of life, then it is in the other corners of the universe.Scientists admit that the biosphere - a phenomenon quite common.They are trying to find life beyond the boundaries of Earth.But as long as our planet is the only one where it exists.
Life can not arise by chance.Too complex a phenomenon.It is recognized that the processes that led to the emergence of life on Earth, we almost did not yet know.
But anyway - there is the biosphere of the Earth, which makes possible the existence and prosperity of life on our planet.
Earth 4.5 billion. Years.The history of its existence, scientists have divided into two great epochs: Kriptozoy and Phanerozoic.Kriptozoyskaya era - this is the era of "hidden life."Geologists in the layers of this period, the following elementary life on the planet ever found.
Phanerozoic era, which began 570 million. Years ago was marked by an explosion, called the Cambrian.Began Paleozoic.At this point originate creatures: worms, molluscs, chordates, and others. Therefore, the present time and has been called "an explosion."
After one hundred million. Years after the "explosion" were the first vertebrates.It took another 400 mln. Years.Life started to get out of the water onto land.So there were reptiles.
note that life appeared in the water for a long time and was not able to enter the land.There was no oxygen atmosphere and the ozone layer, which could protect all life from the deadly radiation emitted by the sun.
With the advent of the first primitive living organisms - prokaryotes, appeared and the Biosphere.Determination of this period is quite clear - Archean eon.
Nowadays, life on Earth boils.It is there in the ocean, in the mountains, in the ice and volcanic vents.
Here live animals, microorganisms, plants and fungi.
Biosphere - is, in essence, uninterrupted space where many species of organisms.Biological communications allow them to interact with each other, forming a huge ecosystem.
earthly nature allows living organisms to adapt to different conditions.Because of this in the world formed a number of natural areas with its exclusive furnishings and dwelling species.
Specialists of «Microsoft» complete work to create a computer model of the biosphere.This allows scientists and politicians to be realistic about the ecology of the earth and make the right decisions.
