In 1912, a German scientist named Alfred Wegener first postulated the theory of continental drift.
(a German scientist; named; Alfred Wegener) (a German scientist named Alfred Wegener; postulated; the theory of continental drift; T:In 1912; T:first)
a German scientist a German scientist named Alfred Wegener
named postulated
Alfred Wegener
the theory of continental drift T:In 1912 T:first