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How mountains are formed?

The crust never is at rest. She then falls, then rises, then winces, then gathers in folds. As a result, mountains, valleys and hills. Of course, it takes a lot of time - a few dozen million years.

Sometimes mountains are born as a result of volcanic eruptions. From the crater of the volcano magma escapes, flying stones, ashes. It all falls to the ground. Gradually, the lava hardens and forms a hill, which with each new eruption is growing. Mountains of volcanic origin have the form of a pyramid with a truncated top.

 


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Vika
2014-04-27 11:11:10
Very informative text.
Kote
2013-10-11 22:25:39
Thanks for the help!
Lera
2013-10-09 19:07:35
All super thank you!
*Doll*
2013-07-27 19:41:52
Put 3, little information, not in detail. I need absolutely another.
Ksyusha
2013-04-08 19:07:04
thanks
danusha
2013-04-07 21:59:44
class 5+
Yaya
2013-02-06 19:26:22
well written
Jan
2013-02-05 20:48:40
This is what I need** I would have gotten 2 , and was in *OPE . THANK you!!
nasty
2012-12-17 11:08:41
how did the Earth
Stepa
2012-12-07 15:55:18
helped

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