Earth, otherwise called the world, Terra, or Gaia, is the third planet from the Sun, the densest planet in the Solar System, the biggest of the Solar System's four physical planets, and the main divine body known to oblige life. It is home to an untold number of species, including billions of people who rely on its biosphere and minerals. The Earth's human populace is isolated among around two hundred free expresses that interface through strategy, clash, travel, exchange, and media.
As per confirmation from sources, for example, radiometric dating, Earth was structured around four and an a large portion of billion years prior. Inside its initial billion years, life showed up in its seas and started to influence its environment and surface, advertising the multiplication of vigorous and also anaerobic organic entities and bringing about the establishment of the air's ozone layer. This layer and Earth's attractive field hinder the most life-debilitating parts of the Sun's radiation, so life could thrive ashore and also in water. From that point forward, Earth's position in the Solar System, its physical properties and its topographical history have permitted life to hold on.