The location of the center of our galaxy was first determined by observations of select one: a. the sun. b. black holes. c. the motions of nearby stars. d. the spiral arms. e. globular clusters

How does the bare soil surface type affect the amount of runoff

You have been tasked with sorting the rock samples shown into three categories, with two rocks in each category. what attribute would you use to sort these rocks? which rocks would be in each category? rocks: obsidian, coquina limestone, granite, soapstone,pumice, and gneiss.

All of the following are extrusive landforms except           a. batholiths.   b. lava plateaus.   c. shield volcanoes.   d. geysers.