What was unknown to scientists during Wegener's time? (1 point)
O Mountain ranges of some continents lined up.
O Fossils were found in many places.
O Earth's crust is made of plates that move.
O The coasts of some continents fit together.
O Mountain ranges of some continents lined up.
O Fossils were found in many places.
O Earth's crust is made of plates that move.
O The coasts of some continents fit together.
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