Do powerful countries, like the United States, have a responsibility to get involved when genocide occurs somewhere in the world? Explain!

What body of water is the second cataract of the nile river submerged under

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.

Identify the type of weathering seen in each picture ? chemical weathering mechanical weathering