As a result of the non-selectivity of kidney's filtration of small molecules, useful substances must be selectively reabsorbed to the blood.  Filtration is the mass movement of water and solutes from plasma to the renal tubule that occurs in the renal corpuscle. About 20% of the plasma volume passing through the glomerulus at any given time is filtered. Glomerulus lets fluid and waste products pass through it, however, it prevents blood cells and large molecules, mostly proteins, from passing. 
        
             
        
        
        
rain/condensation/precipitation
something like that
 
        
                    
             
        
        
        
Answer:
Maybe D
Explanation:
Hope this helps! Have a nice day! Owa Owa!
 
        
                    
             
        
        
        
Tienen mayores relaciones de área superficial a volumen
 
        
                    
             
        
        
        
Lungs (20)Lose elasticity and capacity (40% between ages 20 and 80), increasing difficulty to oxygenate blood.