Worksheet7.2
RESPIRATION IN ANIMALS
2.1.In the diagram below two graphs show the volume of air in the lungs before and after race:
ne
Volume
son
roh
40
15
Time (Seconds)
Time Seconde
i) How many breaths per minute does the boy take before the race
ii) How many breaths does he take during the race
111) What is the reason for this change in breathing rate?
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Answer:
your breath is very fast during running
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