GEOLOGY

Detailed explanation-1: -Alfred Wegener proposed that the continents were once united into a single supercontinent named Pangaea, meaning all earth in ancient Greek. He suggested that Pangaea broke up long ago and that the continents then moved to their current positions. He called his hypothesis continental drift.

Detailed explanation-2: -Wegener’s continental drift theory introduced the idea of moving continents to geoscience. He proposed that Earth (opens in new tab) must have once been a single supercontinent before breaking up to form several different continents.

Detailed explanation-3: -Alfred Wegener, in full Alfred Lothar Wegener, (born November 1, 1880, Berlin, Germany-died November 1930, Greenland), German meteorologist and geophysicist who formulated the first complete statement of the continental drift hypothesis.