I think it is liqid but i dont know realy.
        
                    
             
        
        
        
Answer:
meiosis I
Explanation:
Reduction of the number of sets of chromosomes occurs during meiosis I.
During Meiosis I crossing over of genetic material occurs between chromosome pairs
 
        
             
        
        
        
passive: doesn't require energy, from high to low concentration
active:requires energy, from low to high concentration
i dont know maybe