Question 8
- What is land pollution?[2 marks]
- Mention three causes of land pollution.[3 marks]
- State five effects of land pollution.[5 marks]
Observation
Many candidates were able to answer this question satisfactorily although some of them answered the question vaguely.
The expected answers are:
- Definition of land pollution:
- - Is the destruction/deterioration of the earth’s surfaces directly or indirectly.
- - As a result of man’s activities/ misuse of land resources/ natural occurrence.
- Causes of land pollution
- - agricultural practices/use of chemical.
- - bush burning/deforestation
- - mining
- - human sewage
- - industrial /factory discharge
- - soil erosion/ landfills/ construction work
- - illegal refuse dump
- - lack of drainage on the road sides/at home
- - urbanization
- Effects of land pollution
- - offensive sights/odour
- - breeding ground for insects/animals
- - release of toxic materials into soil
- - can cause injuries/accident
- - renders soil infertile/destroys soil texture
- - contamination of well water/ underground water
- - disease spread.
- - disruption of food chain
- - global warming