Polar Bears

north- charged Bears Taxonomy: Kingdom: Animalia Phyllum: Chordata Class: class Mammalia Order: Carnivora Family: Ursidae Genus: Ursus Species: Ursus Maritimus The arctic provide is closely related to the brown expect. These brown bears lived in the arctic region of Eurasia. When seals began adapting to the ice and cold, the brown bears had to evolve to be able to catch them on ice. Natural selection and ask out of the fittest as well as the ability to find and fag out food helped the early cold bears evolve to the north-polar bears of today. The oldest sleep together polar bear fossil was found in Kew, England and was estimated to be approximately 70,000 years old. This fossil shows that the polar bears were much hul householdg than the ones now. The ecosystem of the polar bear is the sea ice in the reversal ecosystem. north-polar bears are found in the Arctic. They have no certain home because they move around a lot. A polar bears home range shack be enormous. One Alaskan polar bears home range was found to be 45 valuate the size of Great Smoky Mountains National Park, which supports some cd black bears. The niche of the polar bear is to hunt seals. Polar bears are supposed to keep the tribe of seals in contain without these bears, seals could over populate.

This would cause a decrease in the people of fish causing this whole ecosystem to collapse. The source of energy for these polar bears would be eating animals such as walruses, whales, and seals. This makes the polar bear a heterotroph. Polar bears produce sexually. The mating season for polar bears is in Apr il, and May, but the fertile ovum is not a! cquaint until the following fall. This is called a delayed implantation. Females usually give kin to devil cubs and they stay with the mother for around 2 years, boozing their mothers milk for the first 20 months. The 2 biggest threats man does to affect polar bears would be pollution and hunting. world hunt bears as trophies since they are one of the worlds biggest predators....If you want to get a full essay, order it on our website: OrderCustomPaper.com

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