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CLEP Biology Practice Test
Multiple Choice
CLEP Biology
Multiple Choice Practice Test
Question 1 of 3
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Which among the following processes results in dark coloured amorphous substance during decomposition in soil?
A
Fragmentation
B
None of these
C
Mineralization
D
Humification
E
Leaching
Decomposition in soil results in humification and mineralization. Humification refers to the accumulation of dark coloured amorphous substance called humus which serves as a reservoir of nutrients. It resists microbial action and so decomposition takes place very slowly. Further degradation of humus by microbes leads to mineralization.
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