Leaving Certificate Agricultural Science. Soil 2 – Soil Formation. Soil Formation. Soil is formed from the weathering of rocks. Weathering: the breaking down of parent material (rock). There are 3 types of weathering: Physical, Chemical Biological. Physical Weathering.
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Soil 2 – Soil Formation
CO2 + H2O H2CO3 Carbonic acid
NO3 + H2O H2NO3 Nitric acid