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What did discoveries of the ocean floor make clear?

Answer and explanation

Correct answer: Ocean floor has varied landforms

Ocean-floor exploration changed the old idea that the seabed was a simple, level surface. Sounding, mapping, and later methods revealed many physical features beneath the oceans. These include long mid-ocean ridges, deep trenches, underwater mountain chains, plains, and other uneven forms. The seabed is therefore a varied part of Earth’s surface, not an empty or completely flat area.

Option C follows directly from these discoveries because it states that the ocean floor has varied landforms. Option A is wrong because the seabed is not completely flat. Option B is also wrong: the ocean floor has many structures and features. Option D is incorrect because the seabed is made of solid geological material covered by water, not only gas. These findings also helped scientists improve ideas about plate movement and Earth’s changing surface.

Related tags

Ocean FloorReliefMarine Geology

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