The Arctic hare (Lepus arcticus) is highly adapted to survive the extreme cold of the northern tundra, where winter temperatures can drop below −40∘C-40^\circ\text{C}−40∘C.
Arctic hares are much larger than desert hares, with some weighing up to 7 kg7\text{ kg}7 kg. Explain how having a large body size helps the Arctic hare to survive at very low temperatures.
These hares have thick, dense insulating fur and a layer of fat under their skin. Suggest how these features help them to survive.
Many animals in polar regions have the muscles that control their extremities (like paws or hooves) located deep within the warm body core rather than in the extremities themselves, connected by long tendons.
Suggest how this benefits the animal.
Suggest one mechanical property that these long tendons must have.
During severe winter storms, Arctic hares frequently huddle closely together in groups of dozens or even hundreds. Explain how this behavior is an advantage.
