Dr. P.S. Verma & Dr. V.K. Agarwal - Biology

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Q. 5

..............mak

Class 9th Dr. P.S. Verma & Dr. V.K. Agarwal - Biology 6. Natural Resources

Answer :

humus

Humus is organic due to large content of organic carbon. It retains moisture in the soil and loosens the soil thus allowing water and air to penetrate deep underground thus increasing the soil organisms which provide nutrients to the plant.

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