Oceanic crust is composed mainly of basalt .continental crust is composed mainly of granite .why does oceanic crust generally tend to subduct under continental crust when plates collide

Answer and Explanation:

Oceanic crust has a different density amount than continental crust. So since the oceanic crust is actually denser than continental, when plates collide. Oceanic would be the crust to sub duct under continental crust

answer: i don't know

explanation:

you need to provide a picture, otherwise i can't tell you.

if you can provide one, i'd be more than happy to you with this!