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3851
Use the diagram above that shows the effect of nitrates on water bodies Study it carefully and answer questions.

The source of the nitrates in the diagram is termed
  • A. root nodules of legumes
  • B. cloud
  • C. fertilizers
  • D. organic matter
View Answer & Discuss (5) WAEC 2016
3852

Use the diagram above that shows the effect of nitrates on water bodies Study it carefully and answer questions.

The phenomenon in the diagram is termed

  • A. denitrification
  • B. conservation
  • C. eutrophication
  • D. global warming
View Answer & Discuss (3) WAEC 2016
3853
Use the diagram above that shows the effect of nitrates on water bodies Study it carefully and answer questions.

Another cause that could lead to the phenomenon in the diagram is
  • A. exhaust from cars
  • B. oil spillage
  • C. dumping of sewage
  • D. excess rainfall
View Answer & Discuss WAEC 2016
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3854
The illustration above represents a cross between a colour blind male and normal female.
Study it carefully and answer the questions.

What is the genotype ratio of carrier females to normal males in the cross?
  • A. 1:1
  • B. 2:3
  • C. 3:4
  • D. 4:1
View Answer & Discuss WAEC 2016
3855

The illustration above represents a cross between a colour blind male and normal female.
Study it carefully and answer the questions.

Which of the genotypes are carriers of colour blindness?

  • A. 1 and 11 only
  • B. 1 and 111 only
  • C. 11 and 111 only
  • D. 1, 11 and 111 only
View Answer & Discuss (3) WAEC 2016
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