The Earth is one of the only habitable planets in the solar system. The Earth is the only inner planet ( Mercury, Venus, Earth, and Mars) to have one large satellite, the Moon. Mars has two very tiny moons. Mercury and Venus have none. Earth is the only planet that has an atmosphere that containing 21 percent oxygen.
The Earth also is the only planet that has liquid water. The Earth is fragile. it's surface is split into plates (tectonic plates) which float on a rocky mantle - the layer between the surface of the Earth, it's crust, and it's hot liquid core. The inside of the Earth is active and earthquakes, volcanoes and mountain building takes place along the boundaries of the tectonic plates. The Earth is 93 million miles, or 150 million kilometers away from the Sun.
The Earth also is the only planet that has liquid water. The Earth is fragile. it's surface is split into plates (tectonic plates) which float on a rocky mantle - the layer between the surface of the Earth, it's crust, and it's hot liquid core. The inside of the Earth is active and earthquakes, volcanoes and mountain building takes place along the boundaries of the tectonic plates. The Earth is 93 million miles, or 150 million kilometers away from the Sun.