Compared with oceanic crust, continental crust is very buoyant ...

[nelaaney]

Compared with oceanic crust, continental crust is very buoyant because it is
 
  A) composed of basaltic rock that contains air bubbles from successive lava flows.
  B) composed of granitic rocks whereas oceanic crust is composed of basaltic rocks.
  C) thinner and forms a thin upper skin on the oceanic crust below.
  D) very young and fresh.

Question 2

The Earth's magnetic field is generated in
 
  A) outer space.
  B) the crust.
  C) the mantle.
  D) the outer core.

[yahahah24021]

Answer to Question 1

Answer: B

Answer to Question 2

Answer: D