I do beleive that the answer is c
        
                    
             
        
        
        
Okay the primary determining <span> factor would be the concentration.
 Well, </span><span>Factors Affecting the Rate of Diffusion Size Small molecules can slip by </span><span><span>the polar heads of the phospholipids and through the membrane to the other side. </span> </span>
 
        
             
        
        
        
Mutations. Definition. A Mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene. A Mutagen is an agent of substance that can bring about a permanent alteration to the physical composition of a DNA gene such that the genetic message is changed.
        
             
        
        
        
Answer: A) Light 
Explanation:
Hey!! It's me again because why not!!