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Class 7 Science Entrance Exam: Certification Test 2205

Safe and Drinking Water Notes App & e-Book: MCQ 2205

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MCQ: 2205

Oil on the feathers prevents

  1. birds from keeping themselves warm
  2. bugs from entering the bird's feathers
  3. cold air from entering the body
  4. dust to enter feathers
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Safe and Drinking Water Textbook Tests: Class 7 Science App & eBook Notes

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