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Biology 1997 WAEC Past Questions

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46
Which of the following factors may not cause over-crowding?
  • A. Limited space
  • B. Scarcity of food
  • C. Reduced birth rate
  • D. Lose immigration conditions
  • E. Increased birth rate
View Answer & Discuss (3) WAEC 1997
47
Crops grown mainly to feed animals are called
  • A. forage crops
  • B. here crops
  • C. wood crops
  • D. oil crops
  • E. spices
View Answer & Discuss WAEC 1997
48
The farming practice by which an exhausted farm land is left for a number of years before cultivation is
known as
  • A. crop rotation
  • B. continuous cropping
  • C. monocropping
  • D. bush fallowing
  • E. mixed cropping
View Answer & Discuss (1) WAEC 1997
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49
In palm-wine, yeast acts as a
  • A. carrier
  • B. culturing agent
  • C. preservative
  • D. catalyst
  • E. sweetening agent
View Answer & Discuss (2) WAEC 1997
50
Which of the following farm practices can cause loss of soil fertility?
  • A. Mulching
  • B. Compost application
  • C. Use of fertilizers
  • D. Terracing
  • E. intensive cropping
View Answer & Discuss WAEC 1997
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