Answer:
memory cells
Explanation:
to fight the reoccurrence of the invasion
 
        
             
        
        
        
<span> Answer: 1/4 will by AB, type AB blood; 1/4 will be AO, or type A Blood; 1/4 will be BO, or type B blood; 1/4 will be OO, type O Blood</span>
        
             
        
        
        
B. 
I'm pretty sure because, chemicals and pesticides can easily make insects more immune. So therefore the average pesticides will no longer work on them but also some may not be affected by the solutions.