The number of neutrons is equal to the a. atomic number plus the number of protons b. atomic mass minus the atomic number c. atomic number minus the atomic mass d. atomic mass plus the atomic number

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