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2521
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
View Answer & Discuss WAEC 2006
2522
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
2523
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
View Answer & Discuss WAEC 2006
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2524
Which of the following trait in humans is not a morphological variation?
  • A. Height
  • B. Shape of head
  • C. Colour of skin
  • D. Ability to roll the tongue
View Answer & Discuss (1) WAEC 2006
2525
The blood group in humans referred to as a universal recipient is
  • A. o
  • B. A
  • C. B
  • D. AB
View Answer & Discuss WAEC 2006
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