Class 8 Science MCQs – Certification Test 39

Human Activities and Ecosystem MCQ (Question 39) – App & e-Book Download

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MCQ 39: If untreated waste water will be directly spill in to rivers, sea and lakes it may:

contaminate
polluted
spread diseases
all of them

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Human Activities and Ecosystem MCQ App & e-Book – Class 8 Science Textbook Tests

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