here is ur answer
WHY DOES THE RATE OF RESPIRATION CHANGE FROM TIME TO TIME
as in the change of metabolic process
metabolic contain two process catabolic(breakdown process)
anabolic process(construction process)
in starting our anabolic process is greater than our catabolic process so we need more energy which help in our growth
but as the time pases catabolic process become greater than anabolic process at that time respiration rate decreases
CONCLUSION- when anabolic process is greater than catabolic process then respiration rate increase and vice versa.
HOPE IT HELPS U
increase the rate of carbon dioxide and absence of oxygen level change the rate of respiration time to time.
it reduces from birth to adulthood.
Earlier At the time of birth it is about 25 to 30 times min but once grown up it reduces to 14 times min.
ak rate of respiration the inhalation and the exhalation i.e the no. of breaths that we takes per minute is greatly depend upon our blood pressure and hormones actuallu we know abt adrenaline when we in fear or excitement our blood pressure gotta high then breath rate also increase although the rate of respiration is always measure when we sleeps because in that time no one affect us