Look at the diagram above. Two balloons filled with freshwater have been placed into a tank of freshwater. Balloon A floats near the surface, and balloon B sinks to the bottom. What is true about balloon A? *

When new rock is added to an oceanic ridge, the magnetized strips on either side of the ridge are evidence of sea-floor spreading. this is because the rocks on the two sides of the ridge o are equal in width and in polarity are polar opposites oare magnetized vary in width but are equal in polarity