Question

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

Answer 1

Well, there are two kinds of organisms: osmoregulators, that can regulate the level of salt and the salinity does not affect them (an example is salmon: for salmon this sentence is true. Generally, for most fish this sentence is true)

However, for some species, such shark - osmoconformers - this is false: they are affected by the salinity. in general I would conclude that This is false: the marine salinity DOES affect the fish (and other organisms) living there.

Answer 2

the answer is false i just took the test.

and just a side note you cant say the answer is true and false in the same answer.