Hello again!
One limiting factor is the climate changes that the mammoths faced. They “stressed the mammoth population”
Another could be the humans as they arrived, the mammoths had gone extinct
Lastly the mammoths needed a lot of space as they were very big.
Hope this helped
I think it just shows how many people care about the cause and think it’s important. It can also raise money and awareness about it.
Hierarchy - I don’t think I have the full context of the question but the word fits the best of its biology related
