A scientist is studying a volcano that is made of alternating layers of liquid lava and explosive materials such as ash. What type of volcano is it

What is the bill of rights listed in, order

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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.