O-LevelBiologyEcology & Environment5090/12 · May/June 2014 · Q321 Mark

Which activities can lead to soil instability?

Adeforestation (✓), use of insecticides (✓)

Bdeforestation (✓), use of insecticides (✗)

Cdeforestation (✗), use of insecticides (✓)

Ddeforestation (✗), use of insecticides (✗)

✓ Correct answer

B: deforestation (✓), use of insecticides (✗)

Oracle Prep sorts past-paper questions by topic, so you can drill Ecology & Environment and see which topics are most likely to come up next.

Topic: Ecology & Environment, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2014 Paper 1 Variant 2, question 32.

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