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Answer:
The lungs exchange oxygen and carbon dioxide between the air we breathe and the blood. The tracheobronchial tree is the passage way from the mouth to the interior of the lung. Gas exchange occurs in the alveoli deep in the lungs. Breathing air in (inhalation) requires muscular effort.
Answer:
Bismillah Khan, in “The Sound of Music”, emerged as a person imbued with intense and strong patriotic emotions. He had a profound and passionate love for his birthplace, Dumraon in Bihar and for Benaras where he took training to play the shehnai. He feels a deep bond with the Ganga because the flowing waters of the holy river made him improvise and spontaneously play new raagas – the ones which were earlier regarded to be beyond the range of the shehnai. Such was Bismillah Khan’s love for his country and the Ganga that he refused to settle down in America to head a-school for the shehnai. His strong attachment with the sacred river made him miss Banaras when he was in Mumbai or elsewhere. Equally strong was his bonding with his birthplace Dumraon.
Bismillah Khan had great regard for the Hindustani music which, for him, is the richest cultural heritage of India. He wanted the tradition of Indian music to be carried on from generation to generation. That is why he advised the people of India to teach music to their children and felt proud that this music fascinated even the people of the west.