Conclusion

At the end of the last ice age the earth began to warm up and because of this added warmth plant communities, once trapped near the tropics, could migrate their way toward the poles. This migration of biomes invariably caused fragmentation of habitats which put a strain on the megafauna living in North America. Animals that had once lived through previous interglacial periods became extinct. The reason for this is the added strain of human hunters. Thirty-five species of megafauna, including mammoths and giant sloths, went extinct because they could not evolve fast enough to adapt to the changing landscape as well as specialized human hunters.

Presently in North America the land is becoming increasingly fragmented and land is being converted from woodlands and savanna into agricultural land and been used for housing. We as a society must understand that animals can only adapt so fast and if we do not do something we will repeat what our distant ancestors did only this time there may not be anything left to fill the eco-niches that these animals once filled.