Birds migrating in the winter would be a behavioral adaptation. The rest of the adaptations would be structural or physiological because they are controlled by mutations in the DNA. <span />
        
                    
             
        
        
        
The correct answer is option D, They both lack nuclear membrane
Both Archaea and Bacteria belongs to the prokaryotic and thus have no cell nucleus or any other membrane-bound organelles in their cells. These two are single celled and reproduce through binary fission. 
 
        
             
        
        
        
Your question has been heard loud and clear.
Not all scientific laws explain how and why something occurs on a scientific level , only scientific theories explain how and why something occurs on a scientifc level. 
So , it is false. 
Thank you