Answer:
Sterility reveals they belong to different species
Step-by-step explanation:
According to the biological species concept. A species is defined as any members of a population that can interbred in nature and reproduce viable offsprings.
Despite the possibility of interbreeding tigers and lions to produce ligers.
The ligers produced are sterile.
Therefore, the sterility shows they belong to different species.
The fact that the two do not overlap naturally in the while further proves they belong to different species.