CBSE Class 9 Answered
Different terms
Asked by omprakasharya123 | 31 Jul, 2010, 03:14: PM
Expert Answer
f) The alveoli are tiny balloon like air sacs within the lungs where the exchange of oxygen and carbon dioxide takes place.
Kindly post each query separately.
Answered by | 27 Sep, 2010, 04:10: PM
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