Answer:
A. Blood is pushed through vessels 
Explanation:
Heart muscles contract and relax. The most important effect of this action on the human body is Blood is pushed through vessels. 
Hope it will help :)❤
 
        
                    
             
        
        
        
Answer:Institutional Animal Care and Use Committees ( IACUC).
Explanation: it was formally introduced in 1986 with an amendment to the Animal Welfare Act and corresponding changes in U. S. public health service policy. It is the committee that investigates researcher to know if they are properly trained to perform animal procedures, as required by law.
 
        
             
        
        
        
A wall located outside the cell membrane provides the cell support, and protection against mechanical stress or damage from osmotic rupture and lysis. The major component of the bacterial cell wall is peptidoglycan or murein. This rigid structure of peptidoglycan, specific only to prokaryotes, gives the cell shape and surrounds the cytoplasmic membrane.
        
             
        
        
        
I would say that this is the cell wall because it provides strength and protection for the cell. The armor for Nights is protection for the person inside of the armor. Hope this helps!
        
             
        
        
        
Is there a blank at the end of this statement?
If there is then the blank would be filled in with SPECIES