Planet earth

It is inhabited our planet and et the only . It's in the ecosphere, a space around the Sun and having the necessary conditions for the existence other Earth is the largest of the terrestrial planets. That makes it can retain a layer of gas, the atmosphere, which scatters light and absorbs heat. By day keeps the Earth too hot and at night, which cool .seven in ten parts of the earth's surface is covered with water. Seas and oceans also help regulate the temperature. The water evaporates into clouds and falls as rain or snow, forming rivers and lakes. At the poles, which receive little solar energy, water freezes and forms ice caps. The South is largest and has the largest water reservoir sweet the Earth is not a perfect sphere but is pear-shaped. Calculations based on perturbations of the orbits of artificial satellites reveal that thickens Ecuador 21 km; the north pole is dilated 10 m south pole is sunk about 31 meters the Earth formed about 4,650 million years ago, along with the entire solar system. While stones oldest Earth does not have more than 000 million years, meteorites, which are geologically to the Earth's core, give dates of about 4,500 million years, and crystallization of the core and the precursor bodies of meteorites, are think happened at the same time, about 150 million years after the Earth formed and condensed Solar .After System from cosmic dust and gas by gravitational attraction, the Earth was almost homogeneous and quite cold. But the continued contraction of materials and some of the radioactivity of the heavier elements are made warm after began to melt under the influence of gravity, causing differentiation between the crust, the mantle and core with more silicates light moving upwards to form the crust and mantle and the heavier elements, especially iron and nickel, falling towards the center of the Earth to form the núcleo.to same time, the eruption of numerous volcanoes, caused the output and light volatile vapors and some gases were trapped by Earth's gravity and formed the primitive atmosphere , while the water vapor condenses Earth is surrounded by a strong magnetic field , as if the planet had a huge magnet inside whose south pole was near the pole geographic north and vice versa . By parallelism with the geographic poles , the earth's magnetic poles are called magnetic north pole and south magnetic pole , although its real magnetism is opposite to the magnetic north pole is located today near the west coast of the island Bathurst Territories northwest Canada. The south magnetic pole is at the end of the Antarctic continent on Earth .The positions of the magnetic poles are not constant and show remarkable changes from year to year. Earth life is unique and if so we destroying terminal can not destroy needs our to help to be stronger every day she needs our help and explain everything well on planet earth know that all of our lives is in your hands . Well I remember it.