List three characteristics of lungs which make it an efficient respiratory surface
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(i) It has large surface area and branched.
(ii) Contain an extensive network of blood vessels.
(iii) It is thin, delicate and fine.
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muskan3995:
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Answer:
(1) It is very thin.
(2) It is delicated and are also very fine.
(3) It Contains an extensive network of blood vessels.
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