It is much easier for a small animal to run uphill than for a large animal, because:
Correct answer: B. The efficiency of muscles in large animals is less than in the small animals.
- A. Small animals have a lower O2 requirement
- B. The efficiency of muscles in large animals is less than in the small animals.
- C. It is easier to carry a small body weight
- D. Smaller animals have a higher metabolic rate
Explanation
The small animals have a smaller surface area to body volume ratio. They have higher metabolic rates than larger animals. Therefore, it is much easier for small animals to move uphill than large animals. The ease of running uphill also depends on the animal's energy efficiency. Smaller animals may have an advantage in terms of energy expenditure, but larger animals can compensate with their strength and endurance.
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