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Biology 1999 WAEC Past Questions

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41

A known weight of soil sample was oven-dried to obtain a constant weight. The loss in weight was due to
loss of

  • A. organic matter only
  • B. water only
  • C. water and organic matter
  • D. inorganic matter and water
View Answer & Discuss (3) WAEC 1999
42
Carbon is added to the atmosphere by the following processes except
  • A. respiration
  • B. burning
  • C. photosynthesis
  • D. volcanic eruption
View Answer & Discuss WAEC 1999
43
Which of the following is a means of measuring primary production?
  • A. Rate of reproduction of animals
  • B. Life span of an organism
  • C. Number of predators in an environment
  • D. harvested plants in a unit area
View Answer & Discuss WAEC 1999
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44
A situation whereby some mammals remain inactive throughout dry and hot seasons is known as
  • A. aestivation
  • B. dormancy
  • C. burrowing
  • D. incubation
View Answer & Discuss WAEC 1999
45
Which of the following factors may not affect living organisms in an aquatic habitat?
  • A. Turbidity
  • B. Temperature
  • C. Humidity
  • D. Light
View Answer & Discuss WAEC 1999
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