The variability in marine salinity between habitats does not impact the fish living there

The variability in marine salinity between habitats will have an impact on the fish living there as the change in the salt level can affect fish life cycle. It depends on the salt tolerance levels of fish. Fishes which adapt to the change   salt conditions will survive.

her next move would be to use agarose gel electrophoresis to separate the dna molecules of varying length and create a dna fingerprint.

im not intirely sure but i think the anwser is d relative humidity