How do continental crust and oceanic crust differ? a. Continental crust is composed of granite; oceanic crust is composed of basalt. b. Continental crust is less dense than oceanic crust. c. Continental crust is thicker than oceanic crust. d. Oceanic crust is composed of granite; continental crust is composed of basalt. e. Oceanic crust is thicker than continental crust. f. Le ■ Oceanic crust is less dense than continental crust.