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

The large mammals of North American were never exposed to the intellectual

was two miles wide of torn up land, and wild waters carrying rapidly masses of peat and

giant animals, this was the Indians only way of survival. From hunting these mammals

feeding on there own kind was a big change. These animals were like helpless ants and

animals, vertebrate and invertebrate, and of plants, geographical changes