During exponential growth, a population always a. has a constant per capita population growth rate. b. quickly reaches its carrying capacity. c. cycles through time. d. loses some individuals to emigration.

Key Concepts

Exponential Growth

Exponential growth refers to a population increase that occurs when the growth rate is proportional to the current population size. This means that as the population grows, the rate of growth accelerates, leading to a rapid increase in numbers. This type of growth is typically observed in ideal conditions where resources are abundant and environmental resistance is minimal.

Carrying Capacity

Carrying capacity is the maximum number of individuals of a species that an environment can sustainably support. When a population reaches its carrying capacity, growth slows and stabilizes due to limited resources, competition, and other environmental factors. In contrast to exponential growth, populations at carrying capacity do not continue to grow indefinitely.

Per Capita Growth Rate

The per capita growth rate is the average rate at which individuals in a population increase in number, typically expressed as a percentage. It is a crucial factor in determining population dynamics, as it influences how quickly a population can grow under specific conditions. A constant per capita growth rate indicates that the population grows at a steady rate, regardless of its size.