Which of the following best describes the main difference between a sea and ocean? a. a sea has no salt b. an ocean is surrounded by land c. a sea is surrounded by land d. a sea is not composed of fresh water

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