Natural selection is the core of Darwin's theory of evolution. China people's explanation is that creatures compete with each other and can adapt to life and be chosen to survive. In the theory of biological evolution, it means that every organism will have genetic variation when it reproduces the next generation. If this mutation is conducive to a better life of this creature, then this favorable mutation will be preserved in the way of "survival of the fittest" through environmental screening. Natural selection is an idiom in modern Chinese.

"Natural selection, survival of the fittest, law of the jungle" is the slogan of modern biology. Unconsciously, it became the slogan of modern sociology. The so-called "the waves behind the Yangtze River push the waves before", which can't keep up with the times and will naturally be eliminated.

Idioms explain the competition of things: the competition of creatures; Natural selection: natural selection. Creatures compete with each other, and the fittest survive. At first, it refers to the general law of biological evolution, and later it is also used for the development of human society.

Survival of the fittest means survival of the fittest. Explanation: refers to the survival of organisms with strong adaptability, and those with poor adaptability are eliminated. This is a basic argument of Darwin's theory of evolution. In human society, the phenomenon of ~ often occurs. Synonym: Survival of the fittest, law of the jungle.