Which of the following statements accurately describes the composition and characteristics of the in...........

Geography (CDS) World Physical Aspects

Which of the following statements accurately describes the composition and characteristics of the innermost part of the Earth's crust?

The innermost part of the Earth's crust, known as the lithosphere, consists primarily of molten rock and magma

The innermost part of the Earth's crust is composed of solid iron and nickel, forming the solid inner core

The innermost part of the Earth's crust, called the asthenosphere, is partially molten and exhibits semi-fluid behavior

The innermost part of the Earth's crust is characterized by the presence of high-pressure diamond formations due to intense heat.

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Explanation:

The asthenosphere is a layer of the Earth's upper mantle located just beneath the lithosphere. It is composed of partially molten rock that behaves in a semi-fluid manner over geological timescales. This layer plays a crucial role in the movement of tectonic plates and the process of plate tectonics.