In the Earth’s Mantle, what material is moving constantly building up pressure? A Iron, Nickle
B Magma
C Ice and Fire
D Salt water

8. is a technique that uses the images from several telescopes to produce a single image. a. reflection b. interferometry c. radiation d. refraction

Migrant workers who fill employment needs in their host country often send remittances to their home countries

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