Magma in a volcano rises toward the surface . do you think this happens more quickly or more slowly than the eruption its self

What are the four basic classes of organic molecules how do they differ structurally and functionally

The deserts of the sahara and australia are associated with

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