What was unknown to scientists during Wegener’s time?(1 point)

Responses

Mountain ranges of some continents lined up.
Mountain ranges of some continents lined up.

Fossils were found in many places.
Fossils were found in many places.

The coasts of some continents fit together.
The coasts of some continents fit together.

Earth’s crust is made of plates that move.
Earth’s crust is made of plates that move.
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1 answer

During Wegener's time, what was unknown to scientists was that Earth’s crust is made of plates that move. While Wegener proposed the theory of continental drift based on similarities in mountain ranges, fossils, and coastlines, the concept of tectonic plates and the mechanisms of their movement were not understood until later.