2. In nature, natural selection and survival of the fittest refer to the competition between species and within organisms, and the struggle between species and nature, which can adapt to a natural law that natural people are chosen to survive. The environment, no matter where you are, needs the coordinated adaptation of the individual and the environment. This "adaptation" is not only your adaptation to the environment, especially people, but also the understanding, cooperation and mutual assistance of people around you. First of all, we must be "fit" before we can talk about better survival. Only the fittest can draw the strongest sound. Undoubtedly, this is also an important issue left to human society under the conditions of market economy.