Class 7 Science MCQs – Certification Test 403

Safe and Drinking Water MCQ (Question 403) – App & e-Book Download

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MCQ 403: Fish in the ponds and lakes die because the algae:

takes all the minerals from water
takes all the oxygen from water
prevents sunlight to enter water
prevent from respiring

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The "Safe and Drinking Water Learning " App: Free 7th Grade Science MCQ App Download (Android & iOS) to study scientific method. Download Play Store & App Store Study Apps with all functionalities for science digital science communities.