What distinguishes a glacier from other regions that may be covered by snow? a. a glacier is much larger. b. most snow melts from the end of a glacier. c. a glacier covers a large section of a continent. d. at least some snow remains year-round in a glacier.

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.