Marine magnetic anomalies can be used to estimate the rate of seafloor spreading rate of earth's expansion rate of seafloor subsidence age of the seafloor sediments

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 hebrews originally migrated from a. india b. egypt c. arabia d. mesopotamia

In the diagram below, ab and bc are tangent to o. what is the measure of