Answer:
There are many types of matter because one thing or substance can change its structure depending on its environment such as how much pressure it's under and what kind of temperature surrounds it. 
 
        
             
        
        
        
Answer: 
(y+9)(y-3)
Explanation: 
9*(-3) = -27
9+(-3) = 6
        
             
        
        
        
Because chromosome X carries these genes which lead To catch these diseases.
males catch these disease more than females because they have 1. chromosome X but females has 2 .
so the Recessive trait appear in males more than females .
        
             
        
        
        
The answer is A: salt content