I think its A because the small size , shape and the methods of movement have nothing to do with the environments it can survive in <span />
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Answer:
It becomes something like that
It becomes firm/turgid if it were an animal cell it would've burst but the cell wall prevents it from doing so.
Unlike freshwater fish, saltwater fish <span>often contain a lower concentration of salt than the water they live in.
so your answer is </span><span>A. often contain a lower concentration of salt than the water they live in.
hope that helps!!!!!</span>