Which statement describes John Tuzo Wilson’s contribution to the theory of plate tectonics? 1 He proposed that plates carry parts of the seafloor.
2 He theorized that pieces of Earth move for a limited time.
3 He suggested that the asthenosphere is broken into segments.
4 He observed seafloor cracks similar to existing cracks in the continents.

He observed seafloor cracks similar to existing cracks in the continents.

Explanation:

Just took the test

the earthquake in haiti was a magnitude of 7.0 according to the u.s geological survey yet the smaller earthquake in haiti killed more than 200,000 and left more than 1.2 million people homeless. the chile earthquake was a magnitude of 8.8 and 500 times more stronger but chile's earthquake only injured 712 people.

the use of electrical signals that transit messages is know as