Class 7, Respiration in Organisms | NCERT (CBSE) science | Solutions of NCERT textbook exercise questions
Class VII, Science
Respiration in Organisms
NCERT Solutions of Textbook Exercise (Important Questions Only)
Q.1: Why does
athlete breathe faster and deeper than usual after finishing the race?
Solution: An athlete needs more energy during the race
and after. Since demand for the energy is high the breakdown of food must be
speeded up. This requires more oxygen to be supplied. This is
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