Flashcards: Identify patterns of change in rock formations

What patterns of change are noticeable in the graphic of the rock formation below?

Colorado River, Grand Canyon, Landscape

The colors of the rock get darker as the rock formation progresses upwards.

The rock formation gets rougher as it progresses upwards.

The rock formation gets smoother as it progresses upwards.

The colors of the rock get lighter as the rock formation progresses upwards.

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