Question

In the early 20th century, a German meteorologist and geophysicist Alfred Wagener
introduced the theory of continental drift to describe and partially explain the
present arrangement of continents and ocean basins.​

Answer 1

Answer:

In 1912, Alfred Wegener proposed a theory that the continents had once been joined, and over time had drifted apart. This was the Continental Drift Theory. The reaction to Alfred Wegener's theory tells us much about the workings of science. We are taught that modern scientists are driven only by reason and facts. Only early scientists like Galileo needed to fear the reaction to their radical views. Neither of these beliefs is true. New ideas threaten the establishment, regardless of the century.

You can see why Wegener suspected that the continents had once been joined. The continents seem to have a jigsaw fit. The map of soil types below (derived from here) allows you to drag and rotate South America. See how well it fits with Africa. Wegener used this and several other arguments to build his case.

Explanation: