Final answer:
Plate tectonics is a geological theory explaining Earth's lithospheric movement, pioneered by Alfred Wegener and later refined by J. Tuzo Wilson.
Explanation:
Plate tectonics is a geological theory that explains the movement of Earth's lithosphere, or outer shell, over the asthenosphere. Alfred Wegener was the first to propose the theory of continental drift, which laid the foundation for plate tectonics. Further developments by scientists like J. Tuzo Wilson integrated various pieces of evidence to establish the theory.
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