Answer:
a. carrying capacity
Step-by-step explanation:
The number of people, animals, or crops which a region can support without environmental degradation is known as the carrying capacity of that region. Carrying capacity is the maximum number of individuals of a particular species that an ecosystem can support indefinitely without degrading the environment. It is determined by a variety of factors, including the availability of food, water, shelter, and other resources, as well as the presence of predators and competitors.