The earth exists about 4.5 billion years. Throughout this time continents were formed, there were large-scale processes in the depths of the planet. So far formation of a geological basis of Earth is far from the end. Changes are possible also in climatic conditions and in processes of water exchange.
What expects the planet in the future
The future of Earth is substantially connected with the processes happening in the Sun. Some scientists consider that this heated fiery sphere for several billion years will cool down that will affect the planets, next to the Sun. Finally bowels of the earth will cool down so that the movement of continental surfaces will stop. Processes of mountain building, an earthquake and eruption of volcanoes will also stop.
Changes of an external relief of the planet will happen generally due to aeration which will smooth all roughnesses of earth crust over time. The landscape elements which remained after that slowly will disappear under a water smooth surface. Alignment of a surface will lead to the basic change of image of the planet so habitual for modern mankind.
Difficult with an accuracy to foretell what will be average annual temperature on the planet. If in process of cooling of the Sun it goes down, then the Earth's surface will slowly become covered by an ice crust, oceans will begin to freeze. But for some time the luminosity of the Sun can increase that will inevitably lead to evaporation of water and exposure of the earth's surface.
Prospects of life on Earth
Building forecasts of development of Earth, researchers more often turn the looks to the central star of the Solar system. Scientists found out that in a kernel of the Sun the fulfilled helium gradually collects. Continuation of this process approximately through 1 billion years will lead to increase in luminosity of a star approximately for 10%. After this the zone in which dwelling of living beings is possible has to extend. Conditions, favorable for life, will move far beyond Earth orbit. When temperature near the surface of the planet increases, the strengthened circulation in the atmosphere of carbon dioxide will become possible. Its quantity will decrease that can quite lead to disappearance of vegetation. Through several million years it will cause decrease in contents in the terrestrial atmosphere of the oxygen so necessary for existence of living organisms. Through 3 billion years brightness of the central star can increase almost by one and a half times. Most likely, by then climatic conditions on Earth will be comparable with those that exist on Venus now. Even optimistic scientists doubt that at the same time existence of biological life is possible. The mankind if it remains by then, for certain should look for for itself other habitat, getting over to an external part of the Solar system or having at all left vicinities of the Sun in search of the best places.