Answer:
platelets 
Explanation:
platelets clot to plug the holes in the blood vessels and stop the bleeding . if the blood doesn't clot it means there is a low amount of platelets 
 
        
             
        
        
        
No 6 is common for N and H. 3 is only for H(Hydrogen).
For finding the number of hydrogen atoms we should multiply 6 with 3
 So, 6*3 = 18. So there will be 18 hydrogen atoms in 6NH₃
 
        
                    
             
        
        
        
Answer:
coordinated regulation of a group of genes that encode proteins with a common function.