Permafrost 
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Permafrost

Permafrost

(1)

Permafrost.


Permafrost is a mix of permanently frozen ice, soil and rock
 
 
The root word: Frost     The key word: Permafrost

 
World Topics from our world ...
Melting Permafrost Melting Permafrost The permafrost is melting.

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  Last Revision: August 08, 2010     D=2, W=12, F=0, I=1, E=0, V=0, C=0, S=4     Earth Topic: 39 of 85 = Permafrost  
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