Question: What two types of crust make up the surface of the earth?
Answer: continental crust, oceanic crust.
Disambiguated questions and answers: question: What type of crust composed of primarily mafic rocks makes up the surface of the earth?
What type of crust composed of primarily more felsic rocks makes up the surface of the earth?
answer: oceanic
continental
Natural Questions answer: continental
oceanic (from the Wikipedia article "Crust (geology)")