The concept of ‘survival of the fittest’ was first advocated by - (1) Oparin (2) Darwin (3) Spencer (4) Haeckel

The concept of ‘survival of the fittest’ was first advocated by - (1) Oparin (2) Darwin (3) Spencer (4) Haeckel
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(2) Darwin Explanation: "Survival of the fittest" is a phrase originating in evolutionary theory, as an alternative description of natural selection. The phrase is today commonly used in contexts that are incompatible with the original meaning as intended by its first two proponents: British polymath philosopher Herbert Spencer (who coined the term) and Charles Darwin. Herbert Spencer first used the phrase - after reading Charles Darwin's On the Origin of Species - in his Principles of Biology (1864), in which he drew parallels between his own economic theories and Darwin's biological ones.
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