Final answer:
Plate tectonics is the theory that replaced Wegener's hypothesis and explains how continents move, the formation of mountains, and other geological processes.
Step-by-step explanation:
The new theory that replaced Wegener's hypothesis and can explain how continents move, the formation of mountains, and other geological processes is the theory of plate tectonics. Plate tectonics suggests that the Earth's lithosphere is divided into several large plates that are constantly moving and interacting with one another.
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