Which or the following groups has lived on the continent of south america for the longest time? africans native americans spaniards portuguese

Which of the layers of the earth has the following three characteristics? i. it is made of molten rock. ii. it has currents that are constantly moving. iii. earth’s plates float on top of its currents.

The capital of australia was located a. on a south-facing harbor d. between its two largest cities g. near the great barrier reef j. close to asia

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