Final answer:
Carrying capacity refers to the maximum population size that can be supported by available resources without harming the environment. It can vary due to changes in resources or population dynamics.
Step-by-step explanation:
Carrying capacity refers to the maximum size of a population that can be supported by the available resources in a given area. It is the number of individuals of a species that can live sustainably in a habitat without causing harm to the environment.
The carrying capacity is influenced by factors such as the availability of food, water, and space. Examples include the number of fish that can be supported in a pond or the number of humans that can be supported on Earth. The carrying capacity can vary depending on changes in resource availability or population dynamics.