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 A factor that causes the population to quit growing, or decrease in size all together.-For the past 200 years, habitat loss and pesticide intake have been the main factors associated with declines in Bald Eagle populations.  People are attracted to water which are the main nesting areas for Bald Eagles, reducing their habitat.  Another factor that has affected the Bald Eagle is water loss.  People have consumed so much fresh water that it has affected Bald Eagle habitat.  A huge problem with Bald Eagles have been poaching.  Bald Eagles were once seen as a threat to chickens, livestock, and game so they were often shot by ranchers, farmers and hunters.

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 A factor that causes the population to quit growing, or decrease in size all together.-For the past 200 years, habitat loss and pesticide intake have been the main factors associated with declines in Bald Eagle populations.  People are attracted to water which are the main nesting areas for Bald Eagles, reducing their habitat.  Another factor that has affected the Bald Eagle is water loss.  People have consumed so much fresh water that it has affected Bald Eagle habitat.  A huge problem with Bald Eagles have been poaching.  Bald Eagles were once seen as a threat to chickens, livestock, and game so they were often shot by ranchers, farmers and hunters.

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This spectacular behavior is called breaching, and great white sharks breach in order to catch fast-moving prey like seals. Swimming fast at the surface, sharks can reach 40 miles per hour and fly 10 feet into the air; however, breaching is relatively rare because the shark has to use so much energy to propel itself.

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Polar bears:
1. Small ears to reduce heat lost.
2.Strong legs for swimming, running and helping them catch their prey.
3.Fur on the soles of the feet for better grip on ice and for insulation.
4.Thick layer of white fur for insulation against the cold and for camouflage.
5.Large feet to spread the load on the snow.

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Bald eagle:
1.Have long,sharp claws to  defend themselves from predators and help them catch and hold onto their prey.
2.They have excellent eyesight to help them find food.
3.They have curved beaks to help them tear open the skin of their prey.

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The most important habitats for polar bears are the edges of pack ice where currents and wind interact, forming a continually melting and refreezing matrix of ice patches and leads (open spaces in the ocean between sea ice). These are the areas of where polar bears can find the greatest number of seals.

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Great white sharks live in almost all coastal and offshore waters which have water temperature between 12 and 24 °C (54 and 75 °F), with greater concentrations in the United States (Northeast and California), South Africa, Japan, Oceania, Chile, and the Mediterranean.

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Great white shark:
1.A great white shark's electroreceptor and lateral line canals in their head enable them to detect the electromagnetic field by the movement of living animals.
2.These species adapted to maintain body temperature warmer than the surrounding water.
3.A great white shark's jaws have a specimen more than 6.1m long that could exert  a bite force of over 1800 newtons.
4. These creatures have a sharp and sensitive sense of smell which lets them smell the smallest amount of blood in the water , they can even smell blood from a great 5km distance

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When a bald eagle spots its prey floating on the surface of the water, it approaches its prey with a gentle, shallow glide towards the water. Then using its large and sharp talons it snatches the prey right out of the water.Then continues to fly out of the area. But sometimes these catches are not always successful. When catching a heave prey out of the water, the bird can be dragged down the water, resulting in the death of the bald eagle. If it did not drown, there is always a possibility of the bald eagle might die from hypothermia.If the water is cold enough, the eagle might get a cold and develop hypothermia. But most catches are successful.

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The greatest threat: climate change. Climate change, and the loss of sea ice habitat, is the greatest threat to polar bears. The impacts of this change are felt first and worst in the Arctic. Polar bears rely on sea ice to hunt and store energy for the summer and autumn, when food can be scarce.

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The greatest threat: climate change. Climate change, and the loss of sea ice habitat, is the greatest threat to polar bears. The impacts of this change are felt first and worst in the Arctic. Polar bears rely on sea ice to hunt and store energy for the summer and autumn, when food can be scarce.

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Sharks use different types of body language to interact and communicate with one another and prey, showing signs of dominance or submission.

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Sharks use different types of body language to interact and communicate with one another and prey, showing signs of dominance or submission.

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Sharks migrate, using electroreception, to survive and to reproduce. Sharks migrate seasonally to mate in breeding grounds and birth pups in nurseries.

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Sharks migrate, using electroreception, to survive and to reproduce. Sharks migrate seasonally to mate in breeding grounds and birth pups in nurseries.

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Sharks combine physical adaptations such as sharp teeth, heightened senses and a forceful body and tail with behavioral techniques to catch prey.

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The bald eagle uses its talons to penetrate the preys flesh. The large, curved beak is used for ripping apart the recently captured food.

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1) Polar bears are not territorial, but some aggression does occur between males competing for breeding females, in mothers protecting cubs, and in cases where bears may try to steal or scavenge food from another’s kill.
2) Polar bears use body language and vocalizations to communicate.
3) Polar bears are not deep hibernators
4) Only pregnant polar bears hibernate during the winter.
5) They fast through their hibernation. They rely on their fat.
6) Non-hibernating polar bears, during times of food scarcity, can efficiently utilize their energy reserves like hibernating bears.

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Polar bears are marine mammals, and spend much of their time on Arctic sea ice. Many adaptations make polar bears uniquely suited to life in icy habitats.

The bald eagle occurs during its breeding season in virtually any kind of American wetland habitat such as seacoasts, rivers, large lakes or marshes or other large bodies of open water with an abundance of fish.

Sharks have adapted to living in a wide range of aquatic habitats at various temperatures. While some species inhabit shallow, coastal regions, others live in deep waters, on the ocean floor and in the open ocean. Some species, like the bull shark, are even known to swim in salt, fresh and brackish waters.

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1)Light:
2)Temperature:
3)Water:
4)Availability of food:
5)Other Kinds of living things: