How does natural selection lead to evolution?

Natural selection is the process through which organisms that are better adapted to their environment tend to survive and reproduce more effectively than those that are less well adapted. This leads to an increase in the frequency of favorable traits in a population over successive generations. When individuals possess traits that provide a survival advantage—such as better camouflage, resistance to disease, or improved reproductive success—those traits are more likely to be passed on to the next generation.

As these advantageous traits accumulate in a population over time, they can significantly alter the genetic makeup of that population, leading to evolution. Therefore, the idea that favorable traits become more common in successive generations captures the essence of how successful adaptation through natural selection drives the evolutionary process.