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Question 4 1 pts Which of the following is correct about subduction zones (areas where subduction is happening)? (Check all that apply.) Subduction zones are areas of frequent earthquakes. Subduction zones occur at ocean trenches. Lines of volcanoes called volcanic arcs form near subduction zones. The sea floor spreads at subduction zones.

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Answer:

Option (1), (2) and (3)

Explanation:

The subduction zones are created when a denser oceanic plate subducts under a lighter continental or oceanic plate. It forms at the convergent plate boundary. The point above this subduction zone where the depression forms is known as the oceanic trenches. This trenches extends up to a great depth. The subducting plates undergoes partial melting as a result of which the plate melts and the magma rises up towards the over-riding plate forming volcanoes or chain of volcano. This type of plate boundary generates deep focus earthquakes.  

Thus, the correct answer are option (1), (2) and (3).

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