I think it’s B? but i’m not sure.
        
                    
             
        
        
        
Answer: An atom is the smallest unit of ordinary matter that forms a chemical element, they are like building blocks because they form together to make up everything on this earth.
Explanation:
i done know my way around this here terrain 
 
        
                    
             
        
        
        
I think the answer is B; that’s assuming that the other allele of the heterozygous brown eyed man is coding for blue eyes. If it’s not then my answers wrong. Tell me if you don’t understand or you need a step by step explaination
 
        
        
        
ATP consists of three phosphates, a base (adenine) and a sugar (ribose).