In Wegener's time, scientists thought that the occurrence of fossils of the same organism in two different, disconnected continents was proof that __. birds flew between the continents and carried the organisms with them. the weather patterns had changed over time such that some organisms could be blown by the wind from one place to another. there were icebergs in the Atlantic Ocean that could carry organisms from Africa to South America there had once been land bridges separating the continents

There had once been land bridges separating the continents.

Explanation:

This is the most accurate answer to this question. Alfred Lothar Wegener was a German researcher, geologist and meteorologist. Perhaps his greatest accomplishment in this subject was the fact that Wegener was the co-creator of the theory of continental drift. This story states that the continents started out as a large land mass, but  over time, this became fragmented. To this day, the continents have been very slowly drifting around the Earth.

answer; francis cecil sumner;