This rock is hard, silica-rich, and smooth that has a variety of colors and conchoidal fracture. It is composed of amorphous silica or cryptocrystalline quartz. Question: What is the sorting of this rock? Group of answer choices Well Moderately Poorly

What is the general rule about surface currents? cold water flows along the ocean floor towards the equator. the east coasts of continents have cold surface currents, and the west coasts of continents have warm surface currents. seasonal and constant offshore winds create significant upwelling along the west coasts of south and north america and africa. the west coasts of continents have cold surface currents, and the east coasts of continents have warm surface currents.