term1 Definition1term2 Definition2term3 Definition3
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parasite
an organism that lives inside or on another organism and takes food from the organism in or on which it lives
host
an organism that provides food to a parasite that lives on or inside it
free-living organism
scavenger
anus
the opening at the end of an organism's digestive system through which wastes exit
closed circulatory system
a circulatory system in which blood moves only within a connected network of tubes called blood vessels
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