Answer:
The given blank can be filled with decreases.
Step-by-step explanation:
The population, which can be supported indeterminately by an environment is considered as the carrying capacity. In terms of ecology, an ecosystem's carrying capacity refers to the size of the population, which can be encouraged indefinitely on the basis of the accessible resources and services provided by the ecosystem. The carrying capacity relies basically upon the three elements, that is, the size of the population, the number of resources accessible in the ecosystem, and the number of resources consumed by an individual of the population. Thus, in case if the population overshot its carrying capacity it starts to decrease.