Frost

Frost

Frost is the term for several types of coatings or deposits of ice that may form in humid air in cold conditions, usually overnight. In temperate climates it most commonly appears as fragile white crystals or frozen dew drops near the ground, but in cold climates it occurs in a greater variety of forms.[1]

Frost may damage crops or reduce future crop yields, so farmers in frost-prone regions may spend a great deal of money on measures to prevent it forming.

Source:Wikipedia
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