Natural selection is the process that explains how species change over time, favoring traits that improve survival and reproduction.Natural selection is the process that explains how species change over time, favoring traits that improve survival and reproduction. This AI-generated book offers a clear, structured introduction to the mechanism Charles Darwin first described and that remains central to modern biology. You will learn how variation arises within populations, why some traits persist while others disappear, and how environmental pressures shape these outcomes across generations. The book explains key concepts such as fitness, adaptation, and genetic drift, and shows how natural selection differs from other evolutionary forces. Historical context is provided alongside contemporary scientific understanding, giving you a solid foundation for grasping this fundamental biological principle. Written for readers with no prior background in biology, this guide breaks down complex ideas into accessible explanations, helping you understand one of science's most influential theories.Natural selection is the process that explains how species change over time, favoring traits that improve survival and reproduction. This AI-generated book offers a clear, structured introduction to the mechanism Charles Darwin first described and that remains central to modern biology. You will learn how variation arises within populations, why some traits persist while others disappear, and how environmental pressures shape these outcomes across generations. The book explains key concepts such as fitness, adaptation, and genetic drift, and shows how natural selection differs from other evolutionary forces. Historical context is provided alongside contemporary scientific understanding, giving you a solid foundation for grasping this fundamental biological principle. Written for readers with no prior background in biology, this guide breaks down complex ideas into accessible explanations, helping you understand one of science's most influential theories.