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A person with swollen gums rinses hismouth with warm salt water, and the swelling decreases. Which has occurred?  
A) The swollen gums have absorbed the saltwater solution. 
B) The saltwater solution lowers the temperature of the water in the gums.
C) The salt in the solution has moved against the concentration gradient. 
D) The water in the gums has moved from a high to a low concentration of water.


Sagot :

The answer is D: the water in the gums has moved from a high to a low concentration of water.