Compare exponential and logistic population growth models, and define carrying capacity and density dependence.

Compare exponential and logistic population growth models, and define carrying capacity and density dependence.

• A. Exponential growth has a constant per-capita growth rate; logistic growth slows as population approaches carrying capacity; carrying capacity is the maximum sustainable population size; density dependence means birth and death rates depend on population size.
• B. Exponential growth slows as population approaches carrying capacity; logistic growth has a constant per-capita growth rate; carrying capacity is not about population size.
• C. Exponential and logistic growth are identical; carrying capacity is irrelevant.
• D. Only logistic growth considers resource limits; exponential growth occurs in unlimited environments.

Answer: (A)