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प्रश्न
Study the figure on the side and answer the question
What is known as Sial? How deep is the area marked by Sial?
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उत्तर
Sial is the upper layer or crust of the earth. The name Sial is based on the excess of Silica and Aluminium. The depth of Sial is 60 km.
संबंधित प्रश्न
What is the lithosphere?
Describe the mantle.
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