Answers

2014-08-26T23:02:51+05:30
Soil gets it fertility when organisms lyk animals etc die . their bodies decompose and this acts as manure and fertilizes the soil. this is lyk the natural manures.

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2014-08-27T00:48:13+05:30
After the decomposition of living organisms the humus(black substance) when mixes with soil it makes the soil fertile
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