Answer:
The internal structure of the Earth can be divided into four layers: the crust, the mantle, the outer core, and the inner core.
The crust is the outermost layer and is composed of solid rock. It is the thinnest layer, making up less than 1% of the Earth's volume. The crust is divided into two types, oceanic crust and continental crust.
The mantle is the layer directly beneath the crust and is composed of solid rock that is much denser than the rock in the crust. The mantle makes up about 84% of the Earth's volume. It is divided into two layers, the upper mantle and the lower mantle.
The outer core is the layer beneath the mantle and is composed of liquid metal, primarily iron and nickel. The outer core is about 2200 km thick and makes up about 1.7% of the Earth's volume.
The inner core is the innermost layer of the Earth and is composed of solid metal, primarily iron and nickel. It is about 1220 km in diameter and makes up about 0.4% of the Earth's volume.
Vocalization refers to the production of sound by the voice or vocal organs, especially speech. In the context of humans, vocalization refers to the act of speaking or making sounds with the voice, such as singing, talking, shouting, or whispering. In the context of animals, vocalization refers to the sounds that animals make, such as calls, songs, or cries.