Question

The carrying capacity of a population is determined by the
A. Birth Rate
B. Death Rate
C. Limiting Resource
D. Reproductive Status

Answer 1

Hint: The carrying capacity of an ecosystem is the overall size of a biological species' population. Given the food, climate, water and other resources available, it can be maintained in that particular area. In population ecology, carrying capacity is defined as the maximal load of the system.

Complete answer:
The crude birth rate in an era is the total number of live births, divided by the duration of the period in years, per 1,000 populations. The death rate is a measure of the number of deaths per unit of time in a given population, scaled up to the size of that population. A limiting factor is a system variable that induces a significant performance shift or another measure of a system type.
On the resources available in a region a population survives. Food, water and space are included as services. By restricting capital, the carrying capacity is determined. Carrying capacity is the upper limit of an ecosystem that under given circumstances, can provide the essential needs of the population. Therefore, carrying capacity means the maximum number of people in a population that can live in an environment. The population size is beginning to decline beyond carrying capacity due to inadequate facilities.

Hence, the correct answer is option (C).

Note: A logistic function can be used to model the effect of carrying capacity on population dynamics. As a restricting or controlling factor, the precise reason why a population stops growing is understood. Due to a variety of factors depending on the species involved, population size decreases over carrying capacity but may include inadequate space, food supply, or sunlight. For various organisms, the carrying capacity of an ecosystem can vary.