This european nation controlled indonesia for centuries

What was on result of the potato famine

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.

Under which condition below would u expect a coarse-grained intrusive rock like diorite to form?