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Biology 2006 WAEC Past Questions

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46

Air pollution can be reduced by the following methods except?

  • A. building tall factory chimneys
  • B. passing waste gases through filters and absorbers
  • C. using lead-free petrol in car
  • D. recycling tins, cans and bottles
View Answer & Discuss (11) WAEC 2006
47
An effective management of natural resources to ensure their continued yield from generation to generation may involve all the following except
  • A. protection of wildlife
  • B. prevention of habitat destruction
  • C. biological control of pests
  • D. disposal of raw sewage into the sea
View Answer & Discuss WAEC 2006
48
Which of the following orders correctly represents the trend in eutrophication?
  • A. Lack of oxygen → Death of aquatic organisms → Massive algal growth
  • B. Excess nitrates and phosphates → Massive algal growth → Lack of oxygen → Death of aquatic organisms
  • C. Heavy mineralization → Lack of oxygen → Massive algal growth
  • D. Excess nitrates and phosphates → Lack of oxygen → Massive algal growth → Death of aquatic organisms
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49
The following practices can contribute towards the conservation of natural resources except
  • A. afforestation
  • B. deforestation
  • C. contour ploughing
  • D. establishment of Game Reserves
View Answer & Discuss WAEC 2006
50
Variation is a factor which
  • A. differentiates between individuals of the same species
  • B. qualifies an organism to live with others
  • C. enables organisms to adapt to the environment
  • D. states the external features of an organism
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