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Biology, 19.11.2020 17:20 offensiveneedle

The excretory system helps the respiratory system by O introducing more oxygen into the lungs.
O circulating blood into and out of the lungs.
O removing carbon dioxide that is produced during respiration.
O removing urine that is produced during respiration in

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The excretory system helps the respiratory system by O introducing more oxygen into the lungs.
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