Final answer:
The theory of plate tectonics helps explain continental drift and seafloor spreading and explains a wide range of phenomena on Earth.
Step-by-step explanation:
The theory of plate tectonics helps explain continental drift and is a critical component of seafloor spreading. It was not confirmed by Alfred Wegener, as he proposed the theory of continental drift, which was one of the precursors to the theory of plate tectonics. The theory of plate tectonics explains a wide range of phenomena on Earth, such as earthquakes, volcanoes, and the formation of mountain ranges.
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