Identify an advantage of naturalistic studies over experimental studies

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.

Which statement best describes how chemical equations demonstrate conservation of mass?

What are some natural resources found in midwest