A ecosystem productivity is a rate of generation of biomass.’’I know this because it states.”In economy productivity refers to the rate of generation of biomass in an economy.This shows that the economy its usually expressed in units of mass per unit.
        
             
        
        
        
Answer:
b. Become a dwarf
Explanation:
A decreased secretion of growth hormone can result in pituitary dwarfism which then decreases the rate of cell division of cartilage cells in the epiphyseal plate
 
        
             
        
        
        
Overgrazing is a cause of desertification, so c.
        
                    
             
        
        
        
Semen is the thick fluid that contains the sperm that is basic in nature, thus protecting it from the acidic nature of the vagina.