Question

what happens at a boundary of a convergent plate boundary

Answer 1

"At convergent plate boundaries, oceanic crust is often forced down into the mantle where it begins to melt. Magma rises into and through the other plate, solidifying into granite, the rock that makes up the continents. Thus, at convergent boundaries, continental crust is created and oceanic crust is destroyed."
https://oceanexplorer.noaa.gov/facts/plate-boundaries.html

Answer 2

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