A-LevelBiologyEnergy and respirationMay/June 2025Paper 4 Q107 Marks
The grey seal, Halichoerus grypus, is an aquatic mammal that lives in the North Atlantic Ocean. It feeds on fish, which it hunts at depths of up to 70 metres. [Figure 10.1] shows a grey seal. Diving to hunt for fish has an effect on the respiration of the grey seal. A study was carried out to measure the blood lactate concentration of a grey seal before, during and after a dive in deep water.
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