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Yardang
A rock that has evolved a wind-resistant form due to wind erosion. The longer axis of the rock’s wind-resistant feature is aligned with the main wind direction.

Yardang
Word of the day
Oil >> A black, thick liquid used to produce fuel. It is formed from the decayed remains of plants or animals, which break down into liquids and gases under extreme heat and pressure under the Earth’s surface. Oil is extracted from the Earth through drilling and pumping.