In what ways are indian cities similar to cities in the untied states ? how are they different from the u. s cities

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

Which measure of humidity, relative humidity or dew point, best describes the actual quantity of water vapor in a mass of air

In which horizon of soil profile is prevent material usually found