Syrian migrants and their descendants who, whether by choice or coercion, emigrated from Syria and now reside in other countries
        
                    
             
        
        
        
I believe the answer is Birds of North America
Birds of North America basically a comprehensive encycplopedia consisted of various types of birds that live in the region of Canada and United states.
This books contains the combination of works from more than 800 authors and regarded as the Best <span>ornithological works ever completed.</span>
        
                    
             
        
        
        
Answer:
Forgetting curve
Explanation:
Ebbinghaus invented the forgetting curve by using different ways of savings at various time intervals.  Ebbinghaus modern memory research began by using meaningless strings of letters to study the capacity of our memory system. The amount of previously saved letters decreases rapidly, but then reaches a plateau after which a decrease in percentage savings is minimal. We start by forgetting rapidly without practice and then at a certain point forgetting occurs a much lesser rate. With practice, the forgetting curve would look different.
 
        
             
        
        
        
Answer:
The answer is - Epidemiological studies
Explanation:
The options are;
a. Clinical studies
b. Basic medical research studies
c. Market research studies
d. Epidemiological studies
The answer is D- Epidemiological studies.
Epidemiology deals with the study of diseases in human or animal population, how they occur, when the occur and where they occur. It helps determine the factors associated with diseases and what factors can help protect against these diseases. 
Epidemiological studies are used to estimate the frequency of a disease and find potential causes for the occurrence of the disease.
Therefore scientist carry out epidemiological studies through the use of interviews, surveys and measurements in order to study a large group of people.