Darwin’s Four Main Principles

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During the time when Charles Darwin was alive (1809-1882) most of the

Western culture believed that the world was created by God and only

several thousand years old. They believed that our world was always

like it was then. So when Darwin wrote The Origin of Species it shook

up both the cultural and scientific views of his time. His views that

evolution occurs by natural selection was one of the most radial

theories during his time, yet today is widely accepted as a fact among

most of the world.

The first principle of Darwin’s theory is that individuals vary in

many heritable traits, and that no two individuals are exactly alike.

He first noticed this during his observations of the different plant

and animal species he collected from the Galapagos Islands. He

learned that most of these species lived nowhere else in the world,

although they resembled species from the mainland of South America.

After the voyage he began to see how the environment and evolution are

closely related. Since the time of Darwin we have dis...

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