The type of symbiosis where one organism benefits and the other is harmed is called parasitism.

Here's a breakdown:

* Parasitism: In this relationship, one organism, the parasite, benefits by living in or on another organism, the host. The host is harmed by the parasite, which often feeds on it or steals its resources.

Examples of parasitism include:

* Ticks feeding on the blood of animals

* Tapeworms living in the intestines of mammals

* A parasitic fungus infecting a plant

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