simplynatalie11 simplynatalie11

15-11-2019
Health

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Why is the respiratory system the best body system and why do we need it over others? (for debate purposes)

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youraroach youraroach

15-11-2019

i think the circulatory system is the best body system because we need the heart to stay alive, many people live with only one lung. but we need the respiratory system to let oxygen in, and let carbon dioxide out.

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