Question 5
State four ways by which river water is polluted. [ 4 marks]
Observation
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This question was attempted by many and their performance was poor. Candidates wrote wrong answers such as urinating, defecating, washing clothes, having bath, instead of dumping refuse or wastes and oil spillage.
The expected answers are as follows:
5 (a) WAYS BY WHICH RIVER WATER IS POLLUTED
- disposal of refuse into the river
- disposal of sewage into the river
- chemical/toxic wastes from industries channelled into the river
- oil spillage into river/water bodies
- floods
- pesticides/insecticides/excess fertilizers drain into the river