Solid
Naturally occurring
Definite chemical composition
Inorganic
Definite crystalline structure
Answer:
Your answer will be (a) polder.
Explanation: 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.
Canadian shield is composed of Precambrian rocks that cover 2.8 million square miles.
