How many planes exist that pass through points A, B, and C?

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 is a result of the emission from the use of fossil fuel

What is the mostly tropical region in asia