The Answer is Tagus River
1) Hunting: People can over-hunt a species killing too many of them too fast.
2) Global warming: A place can get to hot for them to survive their anymore like coral reefs for example.
3) Destruction of habitats: This can leave animals defenseless and open to attack.
Answer:
Clovis people seemed to have preferred to eat Pleistocene megafauna such as mammoths, while Folsom people seem to have preferred an extinct species of giant bison
