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The World viewed from over 200 km above Image: Public Domain We have used this photo in this article: World Profile Our World, the Earth - the 5th largest planet in our Solar System - is currently the only planet in the entire Universe that is proven to contain life, and some Scientists believe that it is also the only planet which is even capable of supporting life of any type. Apparently, this is because it is the only planet proved to have water on it's surface, along with food and carbon, the necessary ingredients required for life to exist. A little over 70% of our planet's surface is covered by water, and the very first simplistic forms of life evolved from there. It is believed that we humans began to inhabit the Earth from about 200,000 years ago, after evolving from other species, but the planet itself is about 4.5 billion years old. Life began to develop from about 3.5 billion years ago, and nowadays it is home to an estimated 100 million different living species. Living things can flourish safely on our planet due to it's magnetic field, which is possibly controlled by the core of the planet, and which blocks harmful radiation from outer space. Other major protection for all of Earth's many life forms comes from the ozone layer, which was developed by a combination of our earliest living organisms, along with the basic elements that were present before life began on Earth............

By: BlatantWorld.com Copyright © All Rights Reserved

Taken: December 12, 2009
Uploaded: November 11, 2009

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