What the imaginary line that passes through the north and south poles

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics? he proposed that plates carry parts of the seafloor. he theorized that pieces of earth move for a limited time. he suggested that the asthenosphere is broken into segments. he observed seafloor cracks similar to existing cracks in the continents.

Asap will mark geography final plz ! what are the benefits of international aid? (give me the right evidence )

What would have happened to portugal’s trade if they had not found a way to sail around the tip of africa