2018 Q3: With reference to agricultural soils, which of the following statements is correct?

A. (a) High organic matter reduces water holding capacity

B. (b) Soil plays no role in the sulphur cycle

C. (c) Irrigation over time can lead to soil salinization

D. (d) Both (a) and (b)

Explanation: Irrigation over time can lead to the salinization of soils.

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