Why is king hrothgars hall deserted for 12 years?

Because thats where Grendel goes to eat at night. The grabs those who are sleeping and eats them. It’s all in the epic Beowulf

ba geologist finds four sedimentary rock she determines that no geologic events have shifted the layers she labeles them a,b,c,dbfrom top to bottom

the treaty of brest-litovsk was a peace treaty signed on 3 march 1918 between the new bolshevik government of russia and the central powers (german empire, austria-hungary, bulgaria, and the ottoman empire), that ended russia's participation in world war i.