Primary succession is a process of forming ecosystems in an area that has never been inhabited before. Since living organisms are necessary for forming the soil, which is a foundation of every land ecosystem,  at the point before the soil formation or pedogenesis has occurred the ecosystem provides very few habitats.
        
             
        
        
        
<span>it is Method for determining Absolute Age</span>
        
                    
             
        
        
        
I want 10 point lol the answer is 40
        
                    
             
        
        
        
Answer:
An ecological pyramid is a pyramid that illustrates the relations between living organisms at different levels