I believe the answer is B. <span>The antibodies on B cells bind to the antigens on the pathogen's surface.
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Answer: renewable resource ! :))
Explanation:
 
        
             
        
        
        
They appear to be green because of the chloroplast in the cells.
        
             
        
        
        
That the oxygen levels in the test tube increased and carbon dioxide levels decreased because plants produce oxygen using carbon dioxide
        
             
        
        
        
Answer:
 The cerebellum (back of brain).
Explanation: