Answer: It describes water molecules moving across a membrane, which allows the water molecules to pass in and out freely, but forbids the motion of other molecules.
Explanation: 
A in Biology class last year.
 
        
             
        
        
        
Mutations <u>can</u><u> </u><u>not</u><u> </u><u>be</u><u> </u><u>passed</u><u> </u><u>down</u><u> </u><u>to</u><u> </u><u>offspring</u> unless the mutation occurs in the sex cells.
 
        
             
        
        
        
 
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Explanation:
<u>Seed Dispersal is an adaptive mechanism in all seed-bearing plants, participating in the movement or transport of seeds away from their parent plant to ensure the germination and survival of some of the seeds to adult plants. There are many vectors to transport the seed from one place to another.</u>
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Answer:
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Explanation:
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