Answer : Passive transport mechanism 
Explanation: Passive and Active transport mechanisms are the two types of transport mechanisms by which molecules move in and out of the cell membranes. Passive Transport mechanisms do not require energy from cells. The movement of the molecules from High to Low concentration requires no energy. E.g. Osmosis, simple and facilitated diffusion.
        
             
        
        
        
Scabs and Clots to help stop cuts and scrapes from bleeding.
 
        
             
        
        
        
Answer:
between 75 mmHg and 100 mmHg
Explanation:
 
        
             
        
        
        
Immigration followed by competition
I hope this right, if its not, sorry =)
        
                    
             
        
        
        
The mantle i think sorry if i am wrong