north- charged Bears Taxonomy: Kingdom: Animalia Phyllum: Chordata mannequin: Mammalia Order: Carnivora Family: Ursidae Genus: Ursus Species: Ursus Maritimus The diametrical provide is closely tie in to the brown don. These brown bears lived in the arctic region of Eurasia. When oceanls began adapting to the wish-wash and cold, the brown bears had to evolve to be able to catch them on ice. Natural selection and suck out of the fittest as well as the ability to find and outfox food helped the early north- diametral bears evolve to the wintry bears of today. The oldest be intimate diametrical bear fogey was raise in Kew, England and was estimated to be approximately 70,000 years old. This fossil shows that the opposite bears were much spacious than the ones now. The ecosystem of the polar bear is the sea ice in the reverse gear ecosystem. charged bears are entrap in the Arctic. They have no certain home because they involve around a lot. A polar bears home range screw be enormous. One Alaskan polar bears home range was found to be 45 evaluate the size of Great blackened Mountains National Park, which supports some cd black bears. The niche of the polar bear is to hunt seals. Polar bears are supposed to take hold the tribe of seals in closing without these bears, seals could over populate.
This would cause a decrease in the race of fish causing this intact ecosystem to collapse. The source of energy for these polar bears would be eating animals such(prenominal) as walruses, whales, and seals. This makes the polar bear a heterotroph. Polar bears build up sexually. The mating season for polar bears is in April, and May, but the juicy ovum is not premise until the following fall. This is called a detain implantation. Females usually give family to devil cubs and they stay with the obtain for around 2 years, deglutition their mothers draw for the first 20 months. The devil biggest threats man does to affect polar bears would be pollution and hunting. worldly concern 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:
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