The upper part of the mantle above which the crust floats is called
The upper part of the mantle above which the crust floats is called
پردے کا اوپری حصہ جس کے اوپر پرت تیرتی ہے اسے کہتے ہیں۔
Explanation
The upper part of the mantle upon which the crust of the Earth floats is known as the Asthenosphere.