- A Intrinsic growth rate
- B a carrying capacity level
- C only the death rate
- D the immigration
Correct answer: A. Intrinsic growth rate
Explanation: "r" is the intrinsic rate of natural increase.
Concept context
How organisms interact with abiotic factors and respond to stress, plus population attributes, growth models, and interspecific interactions such as predation, competition, and mutualism.