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Definition: An interaction between two organisms of unlike species in which one of them acts as predator that captures and feeds on the other organism that serves as the prey.
Wolves and Caribou:
Wolves and Caribou both live in the arctic tundra. The Wolf is the predator. He hunts the Caribou and eats it for energy. The Caribou eats plant life to obtain energy.
Wolves and Caribou:
Wolves and Caribou both live in the arctic tundra. The Wolf is the predator. He hunts the Caribou and eats it for energy. The Caribou eats plant life to obtain energy.
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Polar Bears and Arctic Foxes:
The Polar Bear eats the Arctic Fox for energy. The Arctic Fox eats other small rodents to obtain energy.
The Polar Bear eats the Arctic Fox for energy. The Arctic Fox eats other small rodents to obtain energy.
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Arctic Fox and Lemmings:
Lemmings and voles, both of which are small rodents, are the favorite prey of the Arctic fox. It's interesting to note that the population cycles of these two rodents are significantly dependent on the Arctic fox. Predators of the Arctic fox include polar bears, wolves, and golden eagles. The Arctic fox has in part adapted to its environment by growing longer fur that actually changes color with the season, acting as camouflage. They are diurnal animals, meaning they are active during the day and they sleep at night.
Lemmings and voles, both of which are small rodents, are the favorite prey of the Arctic fox. It's interesting to note that the population cycles of these two rodents are significantly dependent on the Arctic fox. Predators of the Arctic fox include polar bears, wolves, and golden eagles. The Arctic fox has in part adapted to its environment by growing longer fur that actually changes color with the season, acting as camouflage. They are diurnal animals, meaning they are active during the day and they sleep at night.
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Definition: a species at risk of extinction because of human activity, changes in climate, changes in predator-prey ratios, etc., esp. when officially designated as such by a governmental or international agency.
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Polar bear (Ursus maritimus): In 2008 the bear was listed as threatened. In 2010 the U.S. Fish and Wildlife Service listed 120 million acres as protected habitat for the animals. They are in danger due to global warming. Global warming has caused the polar bears to lose their habitats, which is arctic ice that they live and depend on to hunt their most exclusive prey. The ice also provides for breeding and denning. The increasing temperatures of the world's oceans is causing the ice to melt and disappear for longer period during the summer. This leaves the polar bears an insufficient amount of time to hunt their prey. The Endangered Species Act has added polar bears as threatened everywhere in the world in which they appear. Scientists estimate that their is 20,000-25,000 polar bear currently living.
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Eskimo Curlew (Numennius borealis): The Eskimo Curlew is not only on the endangered list, but very well might be extinct. It was last seen in Manitoba, Canada but was not officially documented. If there are any remaining, the population is considered tiny. Scientists believe that there is about 50 individuals left since there has been no sightings since the early 1980's. Large-scale hunting has contributed to the loss of the this bird's population. The main cause though is the total loss of prairies to agriculture, compounded by the suppression of prairie wildfires.