Segregation was described as wilderness as a way of indicating the inhumaneness of this treatment, for literally wilderness indicates a place without civilization or society. 
Injustice is not always a wilderness, although it sometimes can be. Injustice acts within established society all the time -- sometimes, de jury, it can be under the guise of a law-abiding action, but in reality (de facto) it could be injustice. For example, Donald's Trump urge to deport and restrict immigrants from certain countries reflects injustice in an established environment (in my opinion, of course). 
        
                    
             
        
        
        
Answer:
the shark was at sea for twenty-seven days 
Explanation:
 
        
             
        
        
        
Answer:
Gliders, like other aeroplanes, fly by using ailerons, rudders, and elevators. Gliders are equipped with flaps to control fall speeds by boosting lift and producing drag. Many modern gliders also have airbrakes or spoilers, which obstruct airflow across the wing, raising drag and lowering lift.