A. artificial fertilizers are used
B. only one crop is cultivated at a time
C. the land regains its fertility naturally
D. modern agricultural machinery are used
E. more labour is employed
Correct Answer:
Option C – the land regains its fertility naturally
Hypothesis Testing
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Sampling Error And Sampling Bias
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Sample And Sampling Techniques
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Sources Of Literature - Project Writing
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Research Proposal Vs Research Abstract - Educational Research
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