Author: Mumtaz Ali Bukhari

a. Crust, Mountains, Oceans
b. Crust, Mantle, Trenches
c. Trenches, Mountains, Core
d. Crust, Mantel, Core

Submitted by: Mumtaz Ali Bukhari

A. 1
B. 2
C. 3
D. 4

Submitted by: Mumtaz Ali Bukhari