Question

Woolly mammoths were grass-eating mammals that resembled elephants but with heavy coats, large tusks, and small ears that made them suited for extremely cold weather of the ice age. In addition to hunting by humans, which other conditions may have caused woolly mammoths to become less reproductively successful and eventually become extinct at the end of the last ice age?

Answer 1

As temperatures rose, the adaptations against the cold that the woolly mammoths had became disadvantageous, causing them to die out. 

Answer 2

As the ice age was nearing to an end, the woolly mammoths faced multiple problems.

One of them were the humans, that even though did not hunt them excessively, because they killed the young individuals were endangering the reproduction of the populations.

The climate suddenly changed. The environment was changing so quickly that the larger animals that were very specialized were not able to change quickly enough to survive in the new environment.

The available food changed, and the mammoths were not able to digest it properly, so that led to starvation, and also delaying of reproduction because the animals didn't had enough food for themselves, yet alone for newborns.

All of these things combined, hampered the reproduction of the woolly mammoths, and led to their dying out.