Respuesta :

mbh292
When an organism gains benefit from doing harm to other organisms it is parasitism.

For example, a tick lives and grows by absorbing/stealing blood from its host.

And this relationship needs to be long-term. A mosquito biting a human won't fall into that category.

Answer:

Parasitism, relationship between two species of plants or animals in which one benefits at the expense of the other, sometimes without killing the host organism.

Step-by-step explanation:

Hope this helps

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