Final answer:
Logistic growth occurs when a population's growth slows or stops following a period of exponential growth, as it reaches its carrying capacity. This is determined by the maximum population size that can be supported by available resources without harming the environment.
Step-by-step explanation:
In biology, when a population's growth slows or stops following a period of exponential growth, it is known as logistic growth. Logistic growth occurs when the population reaches its carrying capacity, which is the maximum population size that can be supported by available resources without harming the environment.
As the population size approaches the carrying capacity, factors such as limited food and crowding can cause the growth rate to slow down and eventually level off to zero. This can be represented by a graph with an S-shaped curve, where growth is initially exponential, then gradually slows down and levels off.