Answer:
Helping others is the characteristics of human beings.
Explanation:
It is very important to stand up for others because helping others is the property of human beings. Those people who stand for other people and help them in their difficult situation, these people helped by the God and these people get happiness and prosperity in their life while on the other hand, those people who can't stand for other people will also can't receive help from others in difficult and needy situation. This stand also shows your courage and bravery to the opposite party.
 
        
             
        
        
        
Answer:
Buffy coat.
Explanation:
Between the plasma, and red blood cells the platelets, and white blood cells form a thin white layer which is known as Buffy coat following density gradient centrifugation of the blood.
Centrifugation is the process where the distinguish between cell fragments, and cell from the liquid intracellular matrix occurs. Centrifugation is a technique which separates the particles according to their size, density, viscosity and shape with the help of centrifugal force.
 
        
             
        
        
        
Answer:
C.  Fe2O3 + 2Al → 2Fe + Al2O3
 
        
             
        
        
        
Singing<span>. is the anwser</span>