A logistic growth model describes how a population grows in an environment with limited resources. Initially, the population increases rapidly, but as it approaches the environment's carrying capacity, the growth rate slows down. This results in an S-shaped curve when graphed, reflecting the balance between reproduction and resource limitations. In this model, the carrying capacity is the maximum population size that the environment can sustain. Factors such as food availability, space, and competition influence this limit. Logistic growth is commonly observed in many species, including humans, bacteria, and plants, making it a fundamental concept in ecology.