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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