passwella.
Menu

WAEC Geography 1999 Question 38

Question 38

Environmental Hazards and Conservation

Which of the following forms of pollution is the least harzardous to man?

  1. A.Toxic waste disposed in rivers
  2. B.The use of chemicals for fishing
  3. C.Flaring of gas from refineries
  4. D.A sound of 50 decibels in the air
Show the answer and explanation

Answer: D (A sound of 50 decibels in the air)

Explanation

50 decibels is about the level of normal conversation, which does no harm.