Cavemen hunted them down and killed off most of the population then the Ice Age did the rest until they went extinct.
yes
There are many ways.
Extinction.
The evolution of mammals
That is unknown.
extinction
Water and Rock
The factors that generally cause mass extinction are changes in the natural ecosystem of the species. This may make it difficult for the species to reproduce and to stay alive.
Deforestation of rainforests will likely lead to extensive extinction of species.
mastadons.
Deforestation of rainforests will likely lead to extensive extinction of species.
cheetah's aren't extinct...... but like poachers and stuff could eventually lead to their extinction.