Parasitism is a symbiotic relationship where one species benefits at the expense of the other. The hookworm causing pain inside a host exemplifies parasitism.
Parasitism is a symbiotic relationship where one species, the parasite, benefits while the other species, the host, is harmed. An example of this is a hookworm living inside a host and causing pain. The host suffers harm, making it a classic case of parasitism.
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