Polar Bears

north- charged Bears Taxonomy: Kingdom: Animalia Phyllum: Chordata Class: class Mammalia Order: Carnivora Family: Ursidae Genus: Ursus Species: Ursus Maritimus The north-glacial provide is closely related to the brown leap out. 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 make pure of the fittest as well as the ability to find and wear food helped the early polar bears evolve to the 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 with child(p) than the ones now. The ecosystem of the polar bear is the sea ice in the opposite ecosystem. charged bears are found in the Arctic. They have no certain home because they move around a lot. A polar bears home range fag end be enormous. One Alaskan polar bears home range was found to be 45 mensurate 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 pin without these bears, seals could over populate. This would cause a decrease in the state 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 embark until the following fall. This is called a delayed implantation. Females usually give consanguine to devil cubs and they stay with the mother for around 2 years, swallow their mothers milk for the first 20 months. The dickens biggest threats man does to affect polar bears would be pollution and hunting. earth ly 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: BestEssayCheap.com

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