What are conservations doing to save tigers, and what are possible ways to save tigers that arent ready being done?

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.

During which era in earth's history were the first insects? mesozoic precambrian cenozoic paleozoic

Why is there little farming in mongolia