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Answer:
CRUST:
Description: The Earth's outermost layer, the crust is thin and solid. It is divided into two types: the continental crust, which is thicker and forms the continents, and the oceanic crust, which is thinner and lies beneath the oceans. The crust is composed of various types of rocks and is the layer where all life exists.
MANTLE:
Description: Located beneath the crust, the mantle is the thickest layer of the Earth, making up about 84% of its volume. It is composed mainly of silicate minerals rich in iron and magnesium. The mantle is solid, but it behaves plastically over long periods, allowing for the movement of tectonic plates. The upper mantle, combined with the crust, forms the lithosphere, while the lower part is known as the asthenosphere, which flows more easily.
CORE:
Description: The Earth's core is divided into two parts: the outer core and the inner core. The outer core is liquid and composed mainly of iron and nickel. This liquid layer generates the Earth's magnetic field through its movement. The inner core, in contrast, is solid despite its extremely high temperatures, due to the immense pressure at the Earth's center. It is also composed primarily of iron and nickel. The core is the densest layer of the Earth.