Various igneous and matamorphic rock are used for kitchen couters and floors, as well as walls in office building. name some of the rock that are used for these purposes

Gold is not now being extracted from seawater. why not? a. it would be too disruptive to marine life to develop any marine mineral resources b. there is no gold in seawater c. we don't know how to extract minerals from seawater d. it would be too costly and difficult to separate the small amount of gold from the very large amounts of halite and other minerals

The organ that has two atria and one ventricle is the

Based on current rates the earths human population is expected to grow how much by 2050