Final answer:
Carrying capacity is the maximum size of a population that can survive using available resources. It is a concept in ecology that is determined by limiting factors.
Step-by-step explanation:
Carrying capacity is the maximum size of a population that can survive using the available resources and it can vary up or down. It is a concept in ecology that refers to the maximum population size that can be supported without destroying the habitat. Limiting factors determine the carrying capacity of a population, such as competition for resources like food and space.