O-LevelBiologyEcology & Environment5090/12 · May/June 2019 · Q321 Mark

Some effects of deforestation are: 1 reduction of animal habitats 2 less absorption of carbon dioxide during photosynthesis 3 combustion releasing gases into the atmosphere 4 soil erosion and loss of minerals essential to plant growth Which two effects are most likely to cause global warming?

A1 and 2

B2 and 3

C3 and 4

D4 and 1

✓ Correct answer

B: 2 and 3

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Topic: Ecology & Environment, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2019 Paper 1 Variant 2, question 32.

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