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Water falling from a cloud and reaching the ground. Can become acidic (pH 5.65 and know as Carbolic Acid) due to CO₂ in the atmosphere dissolving into it.
Frozen water droplets that grow larger while being held inside a cloud by strong up-drafts.
A mixture of rain and melting snow (UK) or ice pellets (North America).
situation where a country produces goods more efficiently than another country (relative to other goods)
Ice crystals that leave the cloud and don't melt before hitting the earth.