The circulatory system is the transport system for endocrine information. While the nervous system uses neurons, the endocrine chemicals and hormones must circulate through the body via blood vessels. Many glands in your body secrete hormones into the blood.
 
        
             
        
        
        
Answer:
Its Lipids kids 
Explanation:
Lipids contains fatty acids and have three fatty acid chains bonded to glycerol.
 
        
             
        
        
        
The answer is : B) Inner Ear.
        
             
        
        
        
 Depending on baseline oxygen saturation and the pathological condition of the lungs, risks associated with altitude exposure include profound hypoxemia, pulmonary hypertension, disordered ventilatory control, impaired respiratory muscle function, and sleep‐disordered breathing.