The ratio of total volume of voids in soil aggregates to the total volume of aggregate, is called Porosity
                         
                    
                    
                                                                                
                            
                                
                            
                            
                                
                            
                            
                                
                            
                            Water retained by the interstices due to molecular attraction, is called pellicular water
                         
                    
                    
                                                                                
                            
                                
                            
                            
                                
                            
                            
                                
                            
                            Sum of the percentage of specific yield and specific retention is 100