O Level Biology MCQs – Certification Test 1450

Pollution: Pesticides and DDT MCQs (Question 1450) – App & e-Book Download

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MCQ 1450: In tubifax worms, the tolerance range for oxygen:

is very low
is very high
is zero
is 100%

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O Level Biology MCQs App & e-Book – Pollution: Pesticides & DDT Certification Guide

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