Describe the process that occurs when continents converge

Which of the following countries has declared itself nuclear free

When you cross a time zone going east what happens to the time

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.