Answer: Producing more red blood cells.
- A Lowering the breathing rate
- B Decreasing the heart rate
- C Reducing haemoglobin binding
- D Producing more red blood cells
Correct answer: D. Producing more red blood cells
Explanation: At low atmospheric oxygen the body compensates by increasing red blood cell production and breathing rate to capture more oxygen.
Exponential growth produces an ever-steepening J-curve with no limit, an unrealistic long-term model; logistic growth produces an S-curve that levels off at the carrying capacity K, as growth rate (K−N)/K shrinks to zero once resources are fully used.
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.