The graph displays oxygen dissociation curves for three animals. The shape of each curve is affected by respiration rate and the affinity of haemoglobin for oxygen. What conclusion can be drawn from the graph?
- AAnimal 1 has haemoglobin adapted to have a higher affinity for oxygen than animal 2.
- BAnimal 3 has haemoglobin adapted to have a higher affinity for oxygen than animal 2.
- CAnimal 3 has haemoglobin adapted to maintain a lower respiration rate than animal 2.
- DAnimal 1 has haemoglobin adapted to maintain a higher respiration rate than animal 2.