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It helps us to communicate with one another and express yourself. The brain gets the sound with the help of the inner air and we are able to hear the sound. A bird makes a highpitched sound whereas a lion makes a lowpitched roar. With thousands of questions available, you can generate as many sound worksheets as you want. Ncert book class 8 chapter detailed explanation in english and hindi by divya mam. Download free ncert solutions for class 9 science pdf chapterwise. Science class 8 important questions are very helpful to score high marks in board exams.
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