They live in a host and gets the nutrient from them by exploiting them
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Parasites are plants or animals that live on or in a host getting their nutrients from that host. A host is an organism that supports a parasite. Sometimes the host is harmed by the parasite, and sometimes the relationship is neutral. But the host never benefits from the arrangement. When the parasite does have a negative impact on the host, it doesn't often kill the host directly, but the stressors that come with having parasites can kill.
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