<span>The fusion of the common hepatic duct and the cystic duct forms the common bile duct. The common bile duct carries bile from the gallbladder and empties it into the small intestine, specifically the duodenum. It is also known as the choledochus. It is part of the biliary duct system. </span>
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.
There are many answers to this question
