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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

Select the correct answer from each drop down menu. among these figures figure and blank have the same volume. 1 a c e 2 b d

In a scientific experiment, a is any factor that can be changed or be changed