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Earth is differentiated into three layer...

Earth is differentiated into three layers. The outer level is

A

Lithosphere

B

Asthenosphere

C

Mantle

D

Crust

Text Solution

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The correct Answer is:
To answer the question "Earth is differentiated into three layers. The outer level is," we will follow these steps: ### Step 1: Understand the Structure of the Earth The Earth is composed of three main layers: the crust, mantle, and core. Each layer has distinct characteristics and compositions. ### Step 2: Identify the Layers 1. **Crust**: This is the outermost layer of the Earth. It is thin compared to the other layers and is where we live. It is made up of various materials, including rocks and minerals. 2. **Mantle**: This is the middle layer, located beneath the crust. It is much thicker than the crust and composed of semi-solid rock that can flow slowly over time. 3. **Core**: This is the innermost layer, which is divided into the outer core (liquid) and inner core (solid). The core is primarily composed of iron and nickel. ### Step 3: Determine the Correct Answer From the options provided: - **Lithosphere**: This term refers to the rigid outer layer of the Earth, which includes the crust and the upper part of the mantle, but it is not specifically the outer layer. - **Asthenosphere**: This layer lies beneath the lithosphere and is part of the upper mantle. It is semi-fluid and allows for the movement of tectonic plates. - **Mantle**: This is the middle layer, not the outer layer. - **Crust**: This is the outermost layer of the Earth. ### Conclusion The correct answer to the question is **crust**, as it is the outermost layer of the Earth. ---
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