The picture above depicts the berlin wall which divided in half from the 1960 to 1989 which type of boundary was the berlin wall

Witch of the following volcano hazards is made up of rocky particles about the size of a grain of sand

Which of the following can scientists estimate geologic time? a.observing rock sequences b.radiometric dating c.comparing fossils d.all of these

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