Answer:
The waters are generally crystal-clear, with submarine features clearly visible at depths of 100 feet (30 metres).They: protect coastlines from the damaging effects of wave action and tropical storms. provide habitats and shelter for many marine organisms. are the source of nitrogen and other essential nutrients for marine food chains.
Explanation:
 
        
                    
             
        
        
        
Answer:
a. The condition in which the individual is isolated and divorced from his or her society, work, or sense of self.
Explanation:
Alienation - 
It refers to the situation of loneliness ,  where the person is isolated in the society , is referred to as alienation . 
The person might be separated from family friends and even work , and hence , becomes depressed and isolated . 
The condition is very depressing and frustrating . 
Hence , from the question , 
The correct option is a. 
 
        
             
        
        
        
Answer: Option D
   
Explanation: In simple words, ordinary annuity refers to a fixed amount of payments made at the end of a specified period. The annuity in which the payment is made at the end of the period is called annuity due and not ordinary annuity. 
For example- amount of periodic interest made on the bonds. 
Hence from the above we can conclude that the correct option is D. 
 
        
             
        
        
        
<span>A monopoly must consider customer demand, and then set prices at the most profitable level.</span>