Give reason why volcanic activity is common in areas around marine marine trench
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because of the plate tectonics the Asian plate lies in the marine region and clashes with plates and causes earthquake which in turn causes volcanic eruption
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At oceanic ridges most of the crustal movement is near the surface as sea-floor spreading causes plates to move apart and new crust is formed by magma pushing up from the mantle. ... Earthquakes that are deep in the crust are found in the same areas as the deep-sea trenches
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