The key answer of exercise 4

Charles Darwin, who was born on the 11th of February 1809, was an English naturalist and geologist. He was the first person to suggest that all species evolved from a single original form of life. He also suggested the theory of natural selection, which attempts to explain why there are now so many different forms of life on Earth.

In the Galapagos Islands, where Darwin studied local birds, he found strong evidence to support his theories. Natural selection, which is sometimes called ‘survival of the fittest’, is still the most popular scientific explanation for the variety of life found on our planet. Darwin, whose ideas were questioned at first, is now famous as one of the most important thinkers in human history.