Question

Which piece of evidence did Alfred Wegener's original theory of continental drift have access to?

1 reversing paleomagnetism in rocks on the ocean floor

2 a seafloor that was geologically active with earthquakes, volcanoes, and mountain chains

3 mountains in North America appearing to match up with mountains in Northern Europe

4 seafloor spreading at mid-ocean ridges

Answer 1

1. Reversing paleomagnetism in rocks on the ocean floor

Paleomagnetism indicated that parts of Earth's crust had shifted their positioning over geologic time.

Answer 2

3 mountains in North America appearing to match up with mountains in Northern Europe - Wegener's original theory of continental drift was based on the observation that the continental landmasses of the world appeared to fit together like pieces of a jigsaw puzzle. He noticed that the mountain ranges of North America seemed to match up with those of Northern Europe, suggesting that these landmasses had once been connected.