Dna remains in the nucleus. mrna can travel out of the nucleus. explain how the functions of dna and mrna differ

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

In what part of the body does the most muscle activity happen?

Are the layers of rock above and below the coal older or younger?