Introduction: The Theory of Continental Drift has had a long and turbulent history since it was first proposed by Alfred Wegener in 1910.
(Introduction; has had; a long and turbulent history since it was first proposed by Alfred Wegener in 1910) (it; was proposed; by Alfred Wegener; T:in 1910; T:first)
Introduction it
has had was proposed
a long and turbulent history since it was first proposed by Alfred Wegener in 1910
by Alfred Wegener T:in 1910 T:first