Answer:
a toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies.
Explanation:
 
        
             
        
        
        
How FAST it is. 
NEVER confuse this with velocity.
        
                    
             
        
        
        
Answer:
The inability of the sinuses to drain and the associated lack of airflow create an environment that is ideal for bacterial growth. In acute viral sinusitis, the virus that caused the upper respiratory infection has infected the sinuses and continues to produce mucus, inflammation, and congestion.
 
        
             
        
        
        
Doing personal interviews with holiday shoppers at an indoor mall is an example of A. Prinary research.
        
                    
             
        
        
        
Answer:
C is the correct answer. G1, S, G2 are the interphase, then comes mitosis and then cytokinesis