Population biology is the study of the distribution and abundance of organisms in the environment. Its primary focus is on the factors that affect population growth and decline, such as competition for resources, predation, disease, and environmental change. Synonyms for population biology include ecology, zoology, and evolutionary biology. These related fields share a common interest in understanding the interactions between organisms and their environment, as well as the mechanisms that drive evolution and adaptation. In recent years, population biology has become increasingly important for understanding the effects of human activities on ecosystems, and for developing strategies to conserve biodiversity and protect natural resources.