What are the three major threats to tiger population?

The bengal,like all big cats,is in grave danger mainly because of poaching and habitat destruction.Bengal tigers live in forests,and as the human population grows,they tend to move into areas where tigers live.This leads to conflicts,as the farmers livestock are taken by the tigers,and even the people themselves on occasion.The tigers are the losers in the end,as they are hunted down,just for doing what nature programmed them to do.