Which of these is not a falsifiable hypothesis? a) species change over time. b) inherited characteristics are carried on factors called genes. c) cells come from other cells. d) life on earth was seeded by extraterrestrial aliens.

D

Explanation:

The term falsifiable refers to the possibility that a theory or hypothesis can be proven wrong. Each theory has the capacity to be proven wrong through experimentation, however option D has no way of being proven wrong (even though it cannot be proven right), because this theory is about what happened before humans could keep records. So there is no way it can be proven wrong, and hence it is not a falsifiable hypothesis.

a:

by the combination of an unlimited number of elements