Polar Bears. Why are they endangered?

"Polar bears are in serious danger of going extinct due to global warming."


Polar_Bears.jpgBEAR_of_Polarness Polar bears are the largest land animal. They have 42 teeth which are mostly used aggressively and for catching prey. As for their fur, the hairs are hollow in order to help trap heat and stay warm. An interesting fact is if you were to shave a polar bear, their skin color would actually be black!
PolarBearFamily.jpgPolar Bears are nomadic throughout the arctic.polar_bear.jpgTheir home is on the icebergs.
PolarBearIceberg.jpgHowever, their icebergs are melting due to global warming. They cannot leave the icebergs because then they won't be able to feed on their main food source. Seals. This change of habitat is killing them off.

irem_polar_bear.jpgSoon, they'll lose their home.

The Habitat Of a Polar Bear
  • Habitat:
    • Polar Bears depend on sea ice for hunting and dens
  • Location:
    • Arctic Circle
    • Alaska
    • Canada
    • Greenland
    • Russia
  • Temperature:
    • Temperatures in the arctic average -34C (-29F) in the winter and 0C (32F) in the summer
  • Food Sources:
    • Polar Bears are carnivores
      • Mainly eat ringed and bearded seals
      • Also known to eat walruses, other species of seals, belugas, and the carcasses of larger whales.
  • Mating Habits:
    • Polar Bears breed in late spring when the temperatures of the arctic are starting to rise.
    • If there is not enough food, Polar Bears avoid breeding
save-polar-bears.jpgDue to Global Warming, these poor defenseless creatures are losing their homes.

irem_polar_bear.jpgIcebergs.jpg They cannot survive without the icebergs. They will drown.

Can the polar bears survive a habitat change?

The answer is no. If the icebergs completely melt, leaving the polar bears with swimming as the only choice, then they won't surive.
Polar bears depend wholely on the icebergs because:
*The seals that the polar bears eat live there because of the icebergs,
*The polar bears need the icebergs in order to hunt for the seals
If the icebergs melt, that means less food from lack of seals, and less ground to hunt for what's left.
Polar bears reproduce less if there is.
After a while, the population will go down.
And the ones that do survive, or reproduce, will eventually drown, because they can't swim forever.

Some scientists predict that the icebergs will be completely gone by the summer twenty years from now.

Works Cited

"Polar Bear." National Wildlife Federation. National Wildlife Federation, 1996. Web. 4 Feb. 2010.
"Polar Bears: Habitat & Distribution." Polar Bears. Animals: Explore. Discover. Connect. Web. 4 Feb. 2010.
Cruz, Gilbert. "Will the Polar Bear Survive?" Time. CNN, 2 May 2008. Web. 7 Feb. 2010. http://www.time.com/time/nation/article/0,8599,1737249,00.html.
Glick, Daniel. "On Thin Ice." National Wildlife. National Wildlife Federation, 1 Dec. 2006. Web. 7 Feb. 2010. <http://www.nwf.org/news-and-magazines/national-wildlife/animals/archives/2007/on-thin-ice.aspx>.