Direction for Questions. \( \quad \) For each of the W following questions four choices have bee...

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Direction for Questions. \( \quad \) For each of the
W following questions four choices have been provided. - Select the correct alternatives.
- The prevention of water logging in the clayey soil - is due to the presence of
- (a) organic matter
(b) nitrogen
(c) oxygen
(d) phophorus
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