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2821
Leguminous crops are incorporated into crop rotation in order to
  • A. improve aeration of the soil.
  • B. promote nitrogen fixation
  • C. increase the rate of soil formation
  • D. improve upon the water holding capacity of the soil
View Answer & Discuss (3) WAEC 2011
2822
Which of the following practices improves crop yield in a clayey soil? Addition of
  • A. more water and humus
  • B. lime and humus
  • C. fertilizers
  • D. weedicides and fertilizers
View Answer & Discuss WAEC 2011
2823
Which of the following activities promotes forest conservation?
  • A. Lumbering
  • B. Use of firewood for cooking
  • C. Afforestation
  • D. Production of paper
View Answer & Discuss WAEC 2011
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2824
Which of the following statements is not true about continuous variation? It
  • A. is usually controlled by several genes
  • B. can be influenced by environmental factors
  • C. follows a normal distribution curve
  • D. is usually controlled by one or two pair(s) of genes
View Answer & Discuss WAEC 2011
2825
Acquired characters are
  • A. received from parents
  • B. passed to offspring
  • C. caused by the environment
  • D. caused by mutation
View Answer & Discuss (3) WAEC 2011
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