Answer and explanation;
-Aba is a suitable replacement because Aba and Cys have approximately the same sized side chain and are similarly hydrophobic. 
-However, Aba cannot form disulfide bonds so it will not be a suitable replacement if these are required. 
-Alpha-Aminobutyric acid is biosynthesized by transaminating oxobutyrate, a metabolite in isoleucine biosynthesis.
 
        
             
        
        
        
Answer:
i think they are secondary Consumers. The majority of articles says secondary so yeah
 
        
                    
             
        
        
        
This patient both has left-sided heart failure and right-sided heart failure. In left-sided heart failure, this patient exhibits increasing shortness of breath on exertion as well as three pillow orthopnea which indicates pulmonary congestion. This is because of pooling of blood in the pulmonary circulation. Bipedal edema, in this patient is a grade 2 bipedal edema, reflect right-sided heart failure as there is pooling of blood in the systemic circulation, causing transudation in the most dependent areas of the body. 
        
             
        
        
        
Hair follicles is the hair coming out of the subcutaneous layer