I believe that paleomagnetism was a key to determining that the seafloors were spreading since the paleomagnetism changes at certain geological intervals so that stripes of new rock with the youngest paleomagnetism would be right at the mid-ocean trenches and successively would be older the further they are from the trench, ie on either side of it, symmetrically.
Answer:
to continually produce energy,your organs need oxygen and the oxygen is carried in your red blood cells.
Answer:
pressure
Explanation:
the earth's tectonic plates create pressure to make the magma rise