Seleção (Selection) is a fundamental concept in biology that refers to the process by which certain traits become more or less common in a population over time. This process is driven by environmental pressures, where individuals with advantageous traits are more likely to survive and reproduce. This leads to the gradual evolution of species, as beneficial characteristics are passed on to future generations. In the context of Darwin's theory of evolution, natural selection is a key mechanism. It explains how species adapt to their environments, resulting in the diversity of life we see today. Factors such as predation, competition, and climate can influence which traits are favored, shaping the genetic makeup of populations.