Question

What are the layers of the earth made of?

Answer 1

It depends on the layer.

Explanation:

Let's start with the crust, the most abundant element in the crust is the Oxygen, Silicon, Aluminum, Calcium, Iron, Potassium, Magnesium, Titanium, Hydrogen, Sodium, and others.

Mantle`rarr`Silicon, Oxygen, Iron, Magnesium

Outer core`rarr` Liquid Iron and Nickel

Inner core`rarr` Solid Iron and Nickel

http://www.livescience.com/50233-rock-layer-deep-inside-earth.html