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RE: RESPIRATION FOR OXYGEN TRANSPORT, CONCEPTUAL IMPLICATIONS
Oxygen supply to the body is very useful especially to our brain. If the brain is deprived of oxygen for more than 5min brain death will start to occur, your daughter really ask an important question.
Greetings @jennyvic09, yes it is certainly a question that made me think about it so that I could approach the subject in the best way to make it understandable for a 6 year old girl. Success on your homework.