Give the salient features of Darwin's theory of natural selection.

Salient features of Darwin theory of natural selection-
1. All organisms possess a enormous power of fertility.
2. Food, space and resources are limited.
3. Struggle for the existence within a species as well as between two different species.
4. Nature will favour the survival of the fittest.
5. No two individuals will be exactly identical except identical twins. There always exists some variations.
6. Darwin believed that variations will ultimately leads to the formation of new species.


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