Answer:
used to observe small objects, even cells
Explanation:
The image of an object is magnified through at least one lens in the microscope.
 
        
             
        
        
        
The answer can be either multicellular organisms or the scientific word of Eukaryotes.
        
             
        
        
        
Answer:
They protect the body from infectious agents.
And
They signal the immune system to destroy pathogens.
Explanation:
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