You are presented with the quiz "Organisms living in marine biomes must be adapted to what in the water?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "organisms that live in marine biomes must be adapted to the salt in the water" and "sodium chloride or common salt is the chemical compound NaCl ". 

So, what's the best answer to the question?


 

        chemical compound NaCl   