Which of the following forms of pollution is the least harzardous to man ??
GEOGRAPHY
WAEC 1999
Which of the following forms of pollution is the least harzardous to man ??
- A. Toxic waste disposed in rivers
- B. The use of chemicals for fishing
- C. Flaring of gas from refineries
- D. A sound of 50 decibles in the air
Correct Answer: D. A sound of 50 decibles in the air
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