The oceanic crust has a density of 3.0 g/cm 3 and the continental crust has a density of 2.7 g/cm 3 , why? Explain the differences in their composition! (Hint: rock types)

The crustal surface varies in density. The oceanic crust is heavier than the continental crust. Composition, density, and thickness. Isostasy, density, and rock competence. thickness—the oceanic crust is thinner than the continental crust.

Answer erosion,oil spills,pollution,tourism,urban development;

The answer to this is a