what are parasites___ and its example
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A parasite is an organism that lives on or in a host organism and gets its food from or at the expense of its host. There are three main classes of parasites that can cause disease in humans: protozoa, helminths, and ectoparasites.
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- they are heterotrophic
- they absorb nutrients from other organisms with out killing it.
- they live in their host
- example: lies ,ticks etc...
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