Class 7 Science MCQs (Grade 7) From Textbook
Free Respiration and Food Energy Notes App | Class 7 Science e-Book PDF Download
Class 7 Science Exam MCQs – Practice Test 4 (Chapter 19)
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The number of chemicals found in a cigarette is
Tar is a chemical in a cigarette that causes
Due to carbon monoxide in cigarette, smoker feels
The 'air' that we breath, turns moist, by
Preventive measure for flu is
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