O-LevelBiologyEcology & Environment5090/12 · Oct/Nov 2023 · Q381 Mark

The fossil fuels used as energy sources today developed from animal and plant remains buried millions of years ago. What was the initial source of the energy in these fossil fuels?

Aheat rising from the centre of the Earth trapped by the fuels

Bheat released by decomposers feeding on dead animals and plants

Cmetabolic activity of the animals and plants in the oceans

Dsunlight absorbed by producers

✓ Correct answer

D: sunlight absorbed by producers

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Topic: Ecology & Environment, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2023 Paper 1 Variant 2, question 38.

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