Evolution by Natural Selection

Evolution by natural selection is a process where organisms that are better adapted to their environment tend to survive and reproduce more than those that are less adapted. This occurs because variations exist within species; some traits help individuals thrive under specific conditions. Over time, these advantageous traits become more common in the population, while less advantageous traits may diminish. This gradual change leads to the evolution of species as they adapt to their surroundings, ultimately resulting in the diversity of life we see today. Natural selection is a key mechanism driving this evolutionary change.