Biology, asked by steverogers4, 6 months ago

27. A nospiratory surface must have all of the following
characteristics, except
(1) it must be thick and impermeable to air
(2) It must be moist either with water or mucus
(3) It must be highly vascular and have large
sulla on anda
(4) It must be directly or indirectly in contact with
source of oxygen​

Answers

Answered by manonmaninathichandr
1

Answer:

1st option is the correct answer

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