An antigen causes the body to make antibodies.
Answer:
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Answer:
Cold Air Will Sink
Explanation:
As hot air rises cold air will sink, cold air is more heaveir than hot air.
Axonomic level: phylum Annelida<span>; grade of construction: organs derived from three tissue layers; </span>symmetry<span>: bilateral; type of gut: complete with anus; type of body cavity other than gut: coelom; segmentation: present; circulatory system: closed system; nervous system: brain, with nerve cords and bundles (ganglia)
i hope this helps </span>