Which changes occur in the composition of the earths layers from the surface to the core

B. The material is cooler and denser.

Explanation:

The earth is made up of three layers, the crust, the mantle and the core. Each layer has different characteristics and temperatures, becoming warmer and less dense as it approaches the core.

Man has never reached the core of the earth, but the study of the internal structure of the planet is possible thanks to the studies of geophysicists, who are dedicated to the study of seismology. They observe the phenomena of seismic waves and rely on apparatus to define the characteristics of each layer.

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