I think it’s D............
        
                    
             
        
        
        
The α-amino group of many amino acids is transferred to α-ketoglutarate to form glutamate, which is then oxidatively deaminated to yield ammonium ion (NH4+).
        
                    
             
        
        
        
The answer is none of the above because organic materials, gasses, and minerals are all component soils.
Hope this helps!!!!!!!
Please give brainliest!!!!
 
        
             
        
        
        
It is regulated by peristaltic movements. Then the pyloric sphincter will act as a valve at the junction between the stomach and duodenum, controlling the flow of chyme into the small intestine.
        
                    
             
        
        
        
Two scientists testing different hypotheses about the same question