1.   According to some scientists, global warming threatens the survival of the whole human race.

2.   All of a sudden I became some one who threatened their survival....

3.   Chemical pollution threatens the survival of these animals.

4.   Forest survival is thus threatened on a large scale.

5.   Illegal hunting is threatening the survival of the species.

6.   Illegal hunting threatens the survival of the African elephant.

7.   Poaching threatens the survival of the rhino.

8.   Simply put, anything that increases reproductive success will spread at the expense of anything that does not-even if it threatens survival.

9.   The slightest crisis of confidence can threaten the survival of the banking system and the health of the whole economy.

10.   Overfishing threatens the survival of certain fish species.