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….... leads to accumulation of a dark co...

….... leads to accumulation of a dark coloured amorphous substance called ....... that is highly resistant to microbial action and undergoes decomposition at an extremely slow rate.

A

Humification , humus

B

Mineralisation , minerals

C

Fragmentation , detritus

D

Leaching, unavailable salts

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The correct Answer is:
A
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