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Agricultural Science Past Questions

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1176
The following processes in soil formation are caused by biotic factors except
  • A. bacterial decomposition of plants
  • B. soil mixing and turning by earthworms
  • C. burrowing of rodents
  • D. soil disintegration by dehydration
View Answer & Discuss WAEC 2009
1177
Which of the following rocks is not formed from pre-existing rocks?
  • A. limestone
  • B. granite
  • C. shale
  • D. marble
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1178
Chemical weathering is fastest in
  • A. cool weather
  • B. hot weather
  • C. high altitudes
  • D. low altitudes
View Answer & Discuss WAEC 2009
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1179
It is not advisable to apply fresh farmyard manure because
  • A. its heat of decomposition may cause scorching of plants
  • B. some microorganisms in the manure may die
  • C. the manure may increase soil acidity
  • D. the manure may increase soil alkalinity
View Answer & Discuss WAEC 2009
1180
Magnesium deficiency in crops can be corrected by the application of
  • A. dolomite
  • B. limestone
  • C. quicklime
  • D. urea
View Answer & Discuss WAEC 2009
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