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The polar bear was given its common name by Thomas Pennant in A Synopsis of Quadrupeds (1771). It was known as the "white bear" in Europe between the 13th and 18th centuries, as well as "ice bear", "sea bear" and "Greenland bear". The Norse referred to it as isbjørn ' ice bear ' and hvitebjørn ' white bear '. The bear is called nanook by the ...
The key danger for polar bears posed by the effects of climate change is malnutrition or starvation due to habitat loss.Polar bears hunt seals from a platform of sea ice. Rising temperatures cause the sea ice to melt earlier in the year, driving the bears to shore before they have built sufficient fat reserves to survive the period of scarce food in the late summer and early fall.
Polar bear on sea ice. The opening episode shows how different species respond to the annual summer thaw of sea ice in the Arctic. The extent of the melt has been increasing in recent times, and this could be disastrous for polar bears. A mother emerges from her winter den with cubs, and leads them on to the sea ice to hunt.
Polar bears, particularly starving males, will hunt humans for food, though attacks on humans by female bears are rare. The earliest recorded account of a polar bear attack was written in 1595. It described a predatory attack on two people from Willem Barentsz's crew in the Russian Arctic. Between 1870 and 2014, out of 73 recorded polar bear ...
Watch the Video. Click here to watch on YouTube. If you want to see grizzly bears, Alaska is the place to go. These incredible creatures are important keystone species and vital in shaping the ...
The ulna is estimated to have been 48.5 cm (19 in) long when complete- for comparison, modern subadult polar bear ulnae are 36–43 cm (14–17 in) long. [1] The ulna was dated to the early Weichselian of the Late Pleistocene (~70kya). [2] Of the 16 specimens identified as Pleistocene polar bears, this is the only fossil ascribed to this ...
The polar bear, crying, bubble baths and pancakes act as distractions. The only logical response is that no, you cannot guess a cohesive riddle based on those clues.
Inside Nature's Giants is a British science documentary, first broadcast in June 2009 by Channel 4.The documentary shows experts performing dissection on some of nature's largest animals, including whales and elephants.