Question

Question 20
Major source of mineral in soil is the:

(a) parent rock from which soil is formed
(b) plants
(c) animals
(d) bacteria

Answer 1

(a) parent rock from which soil is formed

The physical and chemical weathering of rocks is the process involved in the formation of soil. Rocks are naturally occurring soil aggregates of one or more minerals. For example, common granite is the combination of quartz, feldspar and biotitic minerals.