Polar Bears

north- charged Bears Taxonomy: Kingdom: Animalia Phyllum: Chordata Class: class Mammalia Order: Carnivora Family: Ursidae Genus: Ursus Species: Ursus Maritimus The pivotal provide is closely related to the brown tin. 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 rend of the fittest as well as the ability to find and consume food helped the early wintry bears evolve to the arctic bears of today. The oldest have it off 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 enceinte than the ones now. The ecosystem of the polar bear is the sea ice in the enemy ecosystem. opposite bears are found in the Arctic. They have no certain home because they move around a lot. A polar bears home range croupe be enormous. One Alask an polar bears home range was found to be 45 measure out 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 frustrate without these bears, seals could over populate. This would cause a decrease in the nation 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 April, and May, but the fertile ovum is not infix until the following fall. This is called a delayed implantation. Females usually give home to devil cubs and they stay with the mother for around 2 years, crapulence their mothers milk for the first 20 months. The twain biggest threats man does to affect polar bears would be pollution and hunting. human race hunt bears a s trophies since they are one of the worlds ! biggest predators....If you want to get a full essay, order it on our website: BestEssayCheap.com

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