The Ice Age

The Ice Age

Twenty thousand years ago during the time of the last ice age period, many
colossal mammals roamed North America. They survived during the times when much of
the earth was covered by immense large bodies of ice that buried forests, fields, and
mountains, but rapidly became extinct after the ice began to retreat and melt. Since then
the human race has introduced many different theories to explain the extinction of these
large mammals. One theory stands above all and explains the truth of this mysterious
disappearance. The Paleo Indians that entered North America from Asia, the climate
change, soil, vegetation and water levels were all major factors in this extinction. The
results of these factors left the biggest impact on the food chain of these animals. The
domino-effect of all these factors is responsible for the extinction of the ice age mammals.
Animals, like all other living organisms have a tendency to adapt to the
environment in which they live. A cold climate favors large animals, since large animals
have more body fat and lose heat at a slower rate then do smaller animals. That is why
many of the mammals that lived during the ice age were enormous. These large animals
consisted of ground sloths and armadillos which came northward from South America,
and horses, saber-toothed cats, mammoths, antelopes, and muskoxen that crossed over the
land bridge from Asia into North America.
For the longest time fossils from many parts of North America were...

The Ice Age

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