Poaching and killing them for their skin. Their teeths are also used for weopons.
No. There are thousands, maybe tens of thousands of crocodiles all over the world; in the wild and in zoos. They are nowhere near extinction.
Human activity and pollution will probably be the greatest cause of elephant extinction.
What_may_cause_a_lion_extinction
poaching.
Happy and safe
the human been of course
Because of loss of habitat
pollution
pollution food loss,etc
ppls shooting them i guess?
No, turtles,crocodiles, snakes and some plants survived the extinction event that wiped out the dinosaurs.
There is no evidence that any aliens exist so it is impossible to say how they may cause extinction.