The correct answer should be either Nose or Trachea
Nose cleans air by using tiny hairs that grab molecules and prevent them from entering. Then the nose transfers air towards the trachea that sends it to the bronchi.
In evolutionary ecology, parasitism is a symbiotic relationship between species, where one organism, the parasite, lives on or in another organism, the host, causing it some harm, and is adapted structurally to this way of life.
