Question

what are the three main layer of the earth​

Answer 1

Starting at the center, Earth is composed of four distinct layers. They are, from deepest to shallowest, the inner core, the outer core, the mantle and the crust.

Answer 2

The Earth has three main layers :

1. Inner core and outer core.

2. Mantle

3. Crust

The deepest is the core and the shallowest is the crust.