Elephants, who are important grazers, are instrumental in transforming woodlands into grasslands. This has a tremendous impact on other species that depend on the grass for their survival. The significance of the elephant in this example is B. keystone species. 
        
                    
             
        
        
        
A T cell, or T lymphocyte, is a type of lymphocyte a type of white blood cell that plays a central role in cell-mediated immunity. 
 
        
             
        
        
        
2 is the answer hope this helps
        
             
        
        
        
The entire food web would be affected