Climatic Changes

In the past few million years the temperature has been toward cooler conditions because of the ice age but we are at the end of the ice age now. The records indicate that from 1850 through 1987 (137 years) the temperature has grown one degree farenheit. Some geographic thories are that the heat is caused by upheavals of the earth's crust and rearrangements of the continents and of the oceans. Atmospheric pollution may also lead to climatic changes. Large amounts of dust and gases from volcanic eruptions may have blocked out the sun and at times cooled the earth. Since the seventeen hundreds the temperature has been rapidly rising because of the end of the ice age. When people burn fuel it creates carbon dioxide which gets stuck in the earth's atmosphere. The heat will just bounce around in the earth's atmosphere for a long time which will cause the earth to get hotter.

 

Prediction

I predict that the Earth will become hotter in several million years with the research I have done.

Polar Bear

This a picture of the current polar bear. In the future the bear would have lost all of the fur and will have a lighter skin color so the bear will not dehydrate or overheat. The polar bear will develop rougher skin so it will not get damaged from the ultraviolet rays of the sun.

Body-To survive the polar bear will shed all of its fur and it will lose layers of fat so it won't overheat. The polar bear's skin color will lighten so the bear will not conduct so much heat. Beneath the polar bear's fur the skin is originally black so the skin under the fur will have to lighten so the polar bear will be able to survive in the warm weather. The polar bear will develop stronger, rougher skin so the heat of the new environment will not penetrate or burn the polar bear.

Behavior-The polar bear will adapt to a warmer temperature so it will be able to survive. The polar bear will only eat seals when it can. The polar bear will eat whatever it finds to survive.The polar bear won't eat seals if the seals are unable to survive. Other than that, the polar bear will eat anything that is running around in the future in order to survive in the hot environment. The polar bear originally lives in the cold and snowy weather. When it gets too hot the polar bear will live mostly in small caves that it finds in the hot environment in the future to cool off. The polar bear has strong legs which give it the ability to run very fast which will help the bear catch its food. It will need to be able to run fast so it can catch anything it is able to find in the future.

 

References

Critchfield, Howard J. "Climatic Change," Colliers Encyclopedia,Volume 6, New York, 1995.

"Climatic Change," Compton's Encyclopedia, Volume 5, Chicago, 1989.

By: Chris A.

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