O Level Biology MCQs – Certification Test 419

GCE O Levels Biology MCQ (Question 419) – App & e-Book Download

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MCQ 419: Use of non-fossil fuel in factory may:

help in lesser air pollution
increase pollution due to chimney fumes when fossil fuel is burnt
lower the air quality in densely populated areas
increase land pollution

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O Level Biology MCQ App & e-Book – GCE O Levels Biology Certification Guide

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