When an ion or a molecule passes through a membrane without something facilitating, or encouraging that passage, such as a protein does. What drives it is the force of the diffusion itself instead.
 
        
                    
             
        
        
        
<h3> Chemical level is the simplest level of organization in a human being. </h3>
 
 
        
        
        
'The Fetus'  would be the correct answer.
        
             
        
        
        
The highest power of x is 3, so this is a third degree multi-term expression, or polynomial. Thus, the answer is A.
        
                    
             
        
        
        
Answer:
Cheek Dimples are a very common characteristic in people. One allele for the gene that codes for cheek dimples is given the symbol “D”. The other allele that codes for no dimples is given the symbol “d”. A person that has cheek dimples 
Explanation: I  what i learn