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GS Geography Physical Geography of World
Q.

Tsunamis are caused by:
Explanation:

ANS. (B) 
Most tsunamis are caused by earthquakes generated in a subduction zone, an area where an oceanic plate is being forced down into the mantle by plate tectonic forces. The friction between the sub ducting plate and the overriding plate is enormous. This friction prevents a slow and steady rate of subduction and instead the two plates become “stuck”.

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