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Which four systems describe fuctions of the circulatory stystems.?

1. Part of this system filters air as it enters the body.
2. oxygen is delivered to cells throughout th body by this system
3. Nutrients are delivered to organsthrough this system
4.This system takes in oxygen from air outside the body.
5. This system removes carbon dioxide from organs & delivers it the lungs.
6.Carbon dioxide exits the body through this systems.
7. This stystems's organs passes oxygen into the bloodstream.
8.This system play a major role in fighting infections

HELPP PLS 40 POINTS.!!