Biology, asked by sagar2k5, 7 months ago

Time period of cardiac cycle in human heart is 0.8 sec. In which of the following this time period is decreases :- (a) Excercise      (b) Infants. (c) Old age         (d) Athletes. (e) Relax condition​

Answers

Answered by Abhishek1006
0

Answer:

option e is your correct answer

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