Start Half lives used carbon dating fossils

Half lives used carbon dating fossils

The 42 teeth of a polar bear reflect its highly carnivorous diet.

Their scientific name means "maritime bear" and derives from this fact.

Polar bears hunt their preferred food of seals from the edge of sea ice, often living off fat reserves when no sea ice is present.

Scientists have responded by noting that hungry bears may be congregating around human settlements, leading to the illusion that populations are higher than they actually are.

Their southernmost range is near the boundary between the subarctic and humid continental climate zones.

Research of injury patterns in polar bear forelimbs found injuries to the right forelimb to be more frequent than those to the left, suggesting, perhaps, right-handedness.

Unlike the brown bear, polar bears in captivity are rarely overweight or particularly large, possibly as a reaction to the warm conditions of most zoos.

The Guinness Book of World Records listed the average male as having a body mass of 385 to 410 kg (849 to 904 lb) and a shoulder height of 133 cm (4 ft 4 in), slightly smaller than the average male Kodiak bears.