Question

Explain the interpretation of Charles Darwin when he observed a variety of small block birds on Galapagos Islands.

Answer 1

Charles Darwin went on a voyage to Galapagos islands for 5 years in his ship H.M.S beagle. There he observed a variety of birds with different beaks which are known as Darwin's finches. While studying these birds he gave his theory of natural selection. According to his theory, there is a rapid multiplication of species in the environment. But due to limited food and space, there is always an interspecific or intraspecific struggle for existence. Therefore, only those individuals which are fit to survive in the existing environment are selected by nature. These organisms reproduce while others die. This variation which exists in the surviving individuals are passed to next generation and ultimately lead to evolution.