The+Earth

Fotografía [|en Flickr de nasa1fan/MSFC] bajo licencia CC ====Our planet is called Earth. We can live on the Earth because there is water and oxygen. Earth is the only planet where we can breathe. Have a look at this presentation about the movements of the Earth.==== media type="custom" key="6386993"

Watch this video about the earth, the sun and the seasons.
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Do you want to know what the structure of the Earth is like? Watch this presentation:
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//**Remember the layers of the Earth.**//
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//**Do you want to know how tectonic plates are created?**//
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But the Earth is a complex system. In this presentation you can learn about the different spheres the Earth is made up of:
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Do you know rocks and minerals? Read this presentation to learn some things about this interesting topic.

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Here you are an excellent guide to this unit.
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