The factor that would most likely decrease the carrying capacity of the habitat is the decrease in available living space.
What do you mean by Carrying capacity?
Carrying capacity may be defined as a species' average population size in a particular habitat.
Carrying capacity means the maximum number of individuals will live in a particular habitat. Above the limit, there is a reduction in the number of individuals found. An Increase in Reproductive success and a decrease in the population of predators increase the carrying capacity.
Therefore, the factor that would most likely decrease the carrying capacity of the habitat is the decrease in available living space.
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