Which of the following correctly describes seafloor spreading? a. new oceanic crust is formed at midocean ridges, pushed away from the ridge, and destroyed at deep-sea trenches. b. new oceanic crust is formed at seamounts and spreads outward in all directions. c. new oceanic crust is formed at deep-sea trenches, pushed away from the trench, and destroyed at midocean ridges. d. new oceanic crust is formed in the middle of tectonic plates and then spreads outward in bands.

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Which of the following correctly describes seafloor spreading? a. new oceanic crust is formed at midocean ridges, pushed away from the ridge, and destroyed at deep-sea trenches. b. new oceanic crust is formed at seamounts and spreads outward in all directions. c. new oceanic crust is formed at deep-sea trenches, pushed away from the trench, and destroyed at midocean ridges. d. new oceanic crust is formed in the middle of tectonic plates and then spreads outward in bands.

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Option D accurately describes the spread of the seabed. Ocean propagation is a process that usually occurs at mid-ocean ridges in which new oceanic crust forms as a result of volcanic activity. These oceanic claws then move from the ridge.