An igneous rock that has a medium-gray, fine-grained groundmass with large crystals of plagioclase indicates that the lava flow that produced it cooled very quickly, forming the crystals. o is called diorite. is called pegmatite. crystallized at depth from intermediate-composition magma, and then rose to the surface and became a lava flow.

(1) which phrase describes an important agricultural change that occurred during the mississippian period? (a) first cultivation of wild grains (b) expansion of marsh elder farming (c) spread of corn agriculture (d) gathering of nuts and berries (2) which group of native americans use northwestern arkansas as it’s traditional hunting grounds? (a) osage (b) quapaw (c) woodland (d) caddo

Which of the following is an example of an outdated theory based on the consensus of the scientific community ? a. big bangb. geocentric solar systemc. heliocentric theoryd. plate tectonics answer : geocentric solar system

In what three areas is the us leader?