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Answered by
2
Answer:
i=nostrils
ii=bronchioles
iii=spiracles
iv=cell
v=breathing in + breathing out
vi=airsacs
Explanation:
hope this helps
Answered by
1
Answer:
I.
i. nostrils
ii. bronchioles
iii. spiracles
iv. cell itself
v. respiratory cycle
vi. alveoli
II.
sleeping < watching T.V. < brisk walk < cycling
All the different activities require different amounts of energy. So the breathe rate changes under different circumstances.
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