I’m pretty sure it’s the second one
        
                    
             
        
        
        
Answer:
D. One is polar, and one is nonpolar
Explanation:
 
        
             
        
        
        
Answer:
Both 
Explanation:
But not all viruses can be stopped by vaccines as there are retro viruses which are impossible to stop
 
        
             
        
        
        
The permeability of the postsynaptic neuron changes; consequently, its membrane potential is changed as well
        
             
        
        
        
The answer is letter C. That spontaneous generation didn't happe
Rudolf Virchow tried to prove that whatever cells existed had to come from pre-existing ones.
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