How are different types of faces formed? Why is the difference in color of people of different regions?

How are different types of faces formed? Why is the difference in color of people of different regions?

faceWe know about the Darwin’s theory which said that the species are formed by evolution. The evolution theory tells that the faces are formed according to the changes in the environment and the living things are formed to live by getting adapted to the atmosphere and with sufficient resources. The living things which live in the hot regions will have the skin according to sustain the heat and so the melanin hormone increases in them. This is the reason why the people in the Africa, South India and Middle America will be in black or light brown color. The heat in the countries like China, America and Australia is less and the content of melanin is less in the people and so they are fair. Based on the physical conditions and environment, the faces are formed in different styles.

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