Https://foreignpolicy.com/2015/10/05/irans-identity-crisis/
        
             
        
        
        
Answer:
Child development is Physiological, biological and emotional growth
 
        
             
        
        
        
Answer:
Lab technician
Explanation:
Chemical used is the main independent variable. Cell growth was the dependent variable or response variable. The cell type and dose are both being tested within the experiment leaving lab technician.