Compare the effects of buoyancy, resistance to movement and heat transfer on aquatic and terrestrial animals.
Tę umiejętność sprawdza 5 zadań wzorowanych na arkuszach IB z lat 2025–2026.
A sea otter loses body heat more rapidly when immersed than when resting in air at the same temperature. Which difference between the two surroundings best explains the need for dense insulating fur? A. Water transfers thermal energy away from the body more…
Compared with nearby land, a deep lake changes temperature slowly when the same amount of energy is supplied per kilogram. Which explanation accounts for this thermal stability? A. Breaking covalent O–H bonds gives water a low heat capacity B. Hydrogen bonds…
Distinguish two physical properties of water from those of air.
Describe two physical adaptations that help a harbour seal live in water.
A river otter swims efficiently through water. Which feature most directly reduces resistance associated with water’s viscosity? A. A high oxygen affinity of haemoglobin B. A smoothly tapered body outline C. A waterproof retinal surface D. Sharp cusps on its…
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