The answer is A. cleavage, differentiation, fertilization, gastralution
        
                    
             
        
        
        
Answer A. If the tectonic plates continually move then they change earth’s crust constantly.
        
             
        
        
        
The clivage furrow forms, the chromosomes are on either side of the cell
        
                    
             
        
        
        
Answer:
b
Explanation:
because the answer is obvious