The two correct answers that indicate different rocks in the same area might weather differently are:
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Cliffs with ridges - The varying heights and shapes of the cliffs could lead to differences in weathering rates due to exposure to elements.
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Rock pillars in the middle of grassy plains - The position of the rock pillars can affect how they are exposed to weathering agents like wind, rain, and temperature changes compared to surrounding areas.
These options highlight differences in physical features and exposure, which can influence the weathering processes.