Population dynamics refer to the study of the changes in the population's size, distribution, age structure, and density over time. It involves the analysis of the factors that affect the size and growth of a population, including birth and death rates, immigration and emigration patterns, and disease prevalence. Synonyms for population dynamics include population ecology, demographic analysis, population biology, ecological demography, and population statistics. These terms are often used interchangeably to describe research that focuses on the dynamics of populations, including the factors that influence their growth or decline, distribution, and structure. Studying population dynamics is critical in understanding the impact of human activities on the environment, wildlife, and ecosystems.