An animal species needs to have enough resources, like food and water, to survive in
any given environment. However, because resources are limited, only a certain
number of animals of a particular species are able to survive in a given habitat. The
greatest number a habitat can support is known as the carrying capacity. If nothing
happens to disrupt or unbalance the relationship between the animal and its habitat,
the carrying capacity will remain stable. However, a carrying capacity is not fixed. If
there is a significant disruption, such as an environmental event that alters the
amount of available resources in the habitat, the carrying capacity will change.
Explain the concept of carrying capacity using the example of the moth and Ragwort.