Deputy Director-Paper-1-2008 :: Discussion


11.The main cause of earthquakes is:-
A.Sudden cooling and contraction of the earth's surface.
B.Coming into activity of some dormant volcanoes.
C.Due to internal heat, sometimes waterchanges into steam and expands.
D.All of these
Answer:  Option  D
Explanation:

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Published by:Kashf Nawaz

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