Wednesday, 16 September 2015
Earth, Earth sciences, Earth's structure, plate tectonics, geology Earth - the only currently known planet where there is life, and its natural features are the subject of many scientific studies. It is the third in a row planet from the Sun and the largest of the Solar System in diameter, mass and density among the terrestrial planets. The main climatic features of the Earth is the presence of two large polar regions, two relatively narrow temperate zones, and a wide equatorial tropical region.  The amount of rainfall on the planet varies widely depending on the location and range from a millimeter to several meters of rain per year . About 71% of the Earth's surface covers the ocean. The remaining portion consists of continents and islands, with Bo? Most of the land populated by people, is located in the northern hemisphere. The evolution of the Earth occurred through geological and biological processes that have left traces of the original conditions. The planet's surface is divided into several continuous motion of lithospheric plates, which lead to periodic merger and separation of the continents. The inner part of the Earth consists of a thick layer of molten mantle and an iron core that generates a magnetic field. The composition of the current atmosphere has been significantly altered from the original of life through various forms of life , which create ecological balance, stabilizing conditions on the surface. Despite significant differences in climate depending on latitude and other geographic factors, the average global climate is quite stable during interglacial periods,  and the change of 1-2 degrees in average global temperature have historically had a major impact on the ecological balance and the geography of the Earth .