Answer
Over 2% of the Earth's mass is comprised of nickel. However, most of this nickel resides in the Earth's core. As the core is so far from Earth's surface, it is wholly inaccessible.
Work Step by Step
Over 2% of the Earth's mass is comprised of nickel. However, most of this nickel resides in the Earth's core. As the core is so far from Earth's surface, it is wholly inaccessible.