Several factors affect the rate at which enzymatic concentration, substrate concentration, and the presence of any inhibitors or activators
        
             
        
        
        
A. The onset of the menstrual flow
        
                    
             
        
        
        
The water repellant properties of waxes is very useful in the leaves of some plants, in the feathers of birds and also in cuticle of insects. Waxes in plant leaves reduce the amount of water that is lost by the leaves. The wax that is present in the birds' feather prevent them from getting wet with water.
        
                    
             
        
        
        
They swam faster and learned to hide 
        
             
        
        
        
Metaphase is the stage in which the "crossing over" occurs. 
As we know chromosomes carry genetic information. This crossing over process happens in eukaryotic cells and occurs during the mitosis phases of cell division. 
Hopefully this helped.