Ask them if they truly understand and keep up with them and stay in contact b
        
             
        
        
        
Explanation:
 1 Formal demography limits its object of study to the measurement of population processes, 
2 it refers to events as birth, death, migration, marriage and divorce
3 it studies only numerical data and human population
4 Formal demography is older approach to study population
1 Social demography deals with questions of population composition and change and how they interact with sociological variables at the individual and contextual levels
 2 Social demography is analytical, statistical and quantitative study of human population
3 It studies both numerical data and social traits of human population.
4 social demography is newer approach to study population 
 
        
             
        
        
        
Answer:
an Endocrinologist is a doctor that deals with diabetes 
 
        
             
        
        
        
1. c
2. False (pulmonary artery carries blood from RV and pumps to the lungs)
3. False
4. True (have trouble breathing while laying down) 
5. D
6. True 
7. True 
8. False 
9. B.
10. True