Research a Arctic Polar Bear, please help me. Current Environmental issues that

Science
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Research a Arctic Polar Bear, please help me.

Current Environmental issues that may also effect communities worldwide?

May 12th, 2015

THESE ARE CARNIVOROUS creatures temperature snow ice and open water their habitat being  range of arctic cycle , it requires cold

it takes a long time just some minutes and i will deliver the rest

May 12th, 2015
he IUCN lists the polar bear as a vulnerable species, citing sea ice losses from climate change as the single biggest threat to polar bear survival. Polar bears rely on the sea ice to hunt, travel, breed, and sometimes to den. 

At their 2014 meeting, the IUCN eported that of the 19 populations of polar bears  3 are declining

  • 6 are stable
  • 1 is increasing
  • 9 have insufficient data
the key danger posed by 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. Reduction in sea-ice cover also forces bears to swim longer distances, which further depletes their energy stores and occasionally leads to drowning. Thinner sea ice tends to deform more easily, which appears to make it more difficult for polar bears to access seals .Insufficient nourishment leads to lower reproductive rates in adult females and lower survival rates in cubs and juvenile bears, in addition to poorer body condition in bears of all ages.

 Warming climate is expected to affect various other aspects of polar bear life: Changes in sea ice affect the ability of pregnant females to build suitable maternity dens. As the distance increases between the pack ice and the coast, females must swim longer distances to reach favored areas on land. Thawing of permafrost would affect the bears who traditionally den underground, and warm winters could result in den roofs collapsing or having reduced insulative value.For the polar bears that currently den on multi-year ice, increased ice mobility may result in longer distances for mothers and young cubs to walk when they return to seal-hunting areas in the spring. Disease-causing bacteria and  would flourish more readily in a warmer climate.Problematic interactions between polar bears and humans, such as foraging by bears in garbage dumps, have historically been more prevalent in years when ice-floe breakup occurred early and local polar bears were relatively thin. Increased human-bear interactions, including fatal attacks on humans, are likely to increase as the sea ice shrinks and hungry bears try to find food on land

The effects of climate change are most profound in the southern part of the polar bear's range, and this is indeed where significant degradation of local populations has been observed.

GOOD LUCK. I THINK I HAVE TRIED MY BEST CONSIDERING THAT ITS A RESEARCH .This is just an essay on how climate relate with bolar bears and it affects them.

May 12th, 2015

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