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Class 8 Science Entrance Exam: Certification Test 39

Human Activities and Ecosystem MCQ App Download & PDF e-Book - 39

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MCQ: 39

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

  1. contaminate
  2. polluted
  3. spread diseases
  4. all of them
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Human Activities and Ecosystem MCQ App (iOS & Android)

Human Activities and Ecosystem MCQ App

Human Activities and Ecosystem MCQ App (Android & iOS)

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7th Grade Science MCQ App

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