Question

__________ layer of the earth is rich in silica​

Answer 1

Answer:

Mantle. layer of the earth is rich in silica

Answer 2

Answer:

Explanation:Mantle

The Mantle (B) is approximately 2885 kilometers thick and is the middle layer of the Earth. The Mantle is made up of minerals rich in the elements iron, magnesium, silica, and oxygen. The Mantle makes up approximately ~85% of the Earth's volume.