When continental drift was first proposed, no one knew _____.
Awhat caused the continents to move
Bwhere all the continents were located
Cwhat a continent was actually made of
Dthat the continents had actually moved in the past
When continental drift was first proposed, no one knew _____.
Awhat caused the continents to move
Bwhere all the continents were located
Cwhat a continent was actually made of
Dthat the continents had actually moved in the past