There are two a and c just pick one
        
             
        
        
        
Answer:
I believe it's A and B
Explanation:
Hope my answer has helped you!
 
        
             
        
        
        
<span>Every magnet has a north pole and a south pole. Similar poles of two magnets repel each other; opposite poles attract each other.</span>
        
             
        
        
        
Answer:
Most familiar is biparental reproduction (sometimes called dioecious reproduction). ... Dioecious reproduction leaves the greatest genetic variability among offspring (an advantage under changing conditions or in competition or when faced with disease), but the organisms must find mates.