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Why many marine organisms cannot survive in a freshwater habitat?
Wiki User
∙ 6y ago
The ones that live in salt water (marine waters) have adapted a method of dealing with the difference in NaCl levels between the water and the cells. If placed in to fresh water, the water will move into the cells causing them to swell and even burst.
If it were the other way around and you put organisms that are found in fresh water into salt water, the water inside the cells would leave them causing the cells to look like Prunes.
This is osmosis in action.
Wiki User
∙ 6y ago
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