a. could logically be pegmatitic granite. b. crystallized at depth from intermediate-composition magma, then rose to the surface and became a lava flow. c. contains plagioclase crystals that are called lapilli. d. formed as the lava flow that produced it was quenched in ocean water.

Why does a tidal bulge occurs on opposote sides of earth

Over half of the african-american population in the united states live in

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