It all starts here — but how were we live. This is called the crust. Bark — it is not only land over the oceans, it's all surface layer of the planet. And if clean up the sea, we will see how bark completely covers the entire Earth. But it is incredibly narrow.
Whether Land apple — bark would be no thicker than his skin. Its thickness varies from 5 to 75 km. But this is not one solid piece of stone. Planetka consists of 14 plates and velikanskih, called tiktanicheskimi. These plates are movable and their movement does not stop even for a moment. Signs of this process can be found everywhere, if know where to find.
Cataclysms of earth from space hazards