O Level Biology MCQs – Certification Test 1284

Pollution: BOD and Eutrophication Quiz (Question 1284) – App & e-Book Download

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MCQ 1284: BOD measures the amount of:

bacteria in a given sample of water
algae being decomposed in a given sample
oxygen bacteria need to decompose organic matter in a given sample
oxygen bacteria need to decompose organic matter in a given sample in a fixed period of time

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