Explanation:
making hypotheses is a scientific method 
 
        
                    
             
        
        
        
Answer:
to provide structure and some fuel
Explanation:
yes sir 
 
        
             
        
        
        
Cells have different uses and functions. There must be differentiation/diversity between cells to form a functional organism.
        
             
        
        
        
The process by which a stimulus increases the probability that a preceding behavior will be repeated is D) reinforcement.