1. Where are various rocks formed?
2. Difference between oceanic and continel rocks.

Explanation:

pt.1 There are three major types of rocks: Metamorphic, Igneous, and Sedimentary. Metamorphic Rocks - Metamorphic rocks are formed by great heat and pressure. They are generally found inside the Earth's crust where there is enough heat and pressure to form the rocks. Metamorphic rocks are often made from other types of rock.

pt.2  The oceanic crust is made up of basalt while the continental crust is made up of granite. The oceanic crust is thinner while the continental crust is much thicker. The oceanic crust is denser than the continental crust. The continental crust has greater buoyancy than the oceanic crust.

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