Who was Alfred Wegner and what did he theorize?

Alfred Lothar Wegener was a German polar researcher, geophysicist and meteorologist. During his lifetime he was primarily known for his achievements in meteorology and as a pioneer of polar research.

Explanation:

theorize

Alfred Wegener proposed the theory of continental drift - the idea that Earth's continents move. Despite publishing a large body of compelling fossil and rock evidence for his theory between 1912 and 1929, it was rejected by most other scientists.

Alfred Wegener was a German meteorologist who achieved fame for his theory of continental drift. This was a theory he put forth in 1912 that the continents had not always been in their present locations, but instead, drifted across the ocean towards and away from each other.