Population Biology
Population biology is the study of populations of organisms, focusing on the factors that affect their size, density, genetic composition, and distribution over time. It integrates principles from both ecology and evolutionary biology to understand how populations interact with their environment and how they change genetically from one generation to the next. By examining dynamics such as birth and death rates, migration, and the effects of natural selection and genetic drift, this field provides the fundamental framework for understanding how species adapt, persist, and evolve.