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Which pair best shows the complexity of the ocean floor?

Answer and explanation

Correct answer: Ridges and trenches

Direct answer: Option A, ridges and trenches. The ocean floor is not a perfectly flat surface. It contains raised features and deep depressions, just as land has mountains and valleys. Mid-ocean ridges are long, elevated underwater mountain systems. Ocean trenches are very deep, narrow depressions, commonly associated with subduction zones. Together they clearly show the relief and complexity of the sea floor. Option A is therefore the best pair. Option B, fields and roads, are land-use features and do not describe ocean-floor relief. Option C, clouds and rain, are atmospheric phenomena above the surface, not permanent forms of the sea floor. Option D, rivers and ponds, are surface-water features and do not represent the major deep structures of ocean basins. The reasoning is simple: look for one raised ocean-floor feature and one deep ocean-floor feature. Memory cue: ridges rise; trenches plunge.

Related tags

RidgesTrenchesOcean Floor Relief

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