Which statement describes the moment magnitude scale? It measures only small earthquakes. It collects data using a seismograph. It shows only the strength of seismic waves that were produced. It determines the amount of damage caused by an earthquake.

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