Answer:
b. viruses do not undergo mitosis
Explanation:
One characteristics of non-living things is their ability to reproduce. Viruses on their own lack this ability to reproduce their kind. Mitosis is a form of reproduction where one cell divides to form two daughter cells. Viruses do not undergo mitosis. 
Viruses are just an assembly of biochemical particles that need to gain entrance into a living cell to be able to multiply.
 
        
             
        
        
        
Answer:
bc oxygen contributes to muscle performance on and off the field.
 
        
             
        
        
        
C) To gather info about the natural world, to explain natural phenomena, and allow reasonable predictions of future events
        
                    
             
        
        
        
It is the first option. Atmospheric nitrogen is very stable so there fore hard to react with. But bacteria contain molecules that can break the bond of nitrogen.
        
             
        
        
        
Since the air is a great thermal isolator, the windows prevent heat exchange better than one made out of a single thick sheet of glass. The air between the thin blankets is not moving around and will form an isolating layer that acts exactly like another blanket, thus improving the thermal isolation