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Population Growth - population's life cycle Decline is the...

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Population Growth A population is a group of individuals of the same species living in the same geographic area. The study of factors that affect growth, stability, and decline of populations is population dynamics. All populations undergo three distinct phases of their life cycle: 1. growth 2. stability 3. decline Population growth occurs when available resources exceed the number of individuals able to exploit them. Reproduction is rapid, and death rates are low, producing a net increase in the population size. Population stability is often proceeded by a "crash" since the growing population eventually outstrips its available resources. Stability is usually the longest phase of a
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Unformatted text preview: population's life cycle. Decline is the decrease in the number of individuals in a population, and eventually leads to population extinction . Factors Influencing Population Growth Nearly all populations will tend to grow exponentially as long as there are resources available. Most populations have the potential to expand at an exponential rate, since reproduction is generally a multiplicative process. Two of the most basic factors that affect the rate of population growth are the birth rate , and the death rate . The intrinsic rate of increase is the birth rate minus the death rate....
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