The left side of the heart performs the circulation

When studying heredity, what is the relationship of dna based and traits? super urgent !

Which barrier to economic development is shown in the following examples? i. the high rate of hiv infection in underdeveloped nations ii. the use of children as soldiers in uganda’s army in the early 2000s iii. low literacy rates in underdeveloped nations with limited exposure to adequate education a. foreign debt b. political instability c. widespread disease d. low levels of social welfare

Which of these is a controllable risk fator for disease