Question

respiratory tubes in insects one word ​

Answer 1

Answer:

Air enters the respiratory systems of insects through a series of external openings called spiracles. These external openings, which act as muscular valves in some insects, lead to the internal respiratory system, a densely networked array of tubes called tracheae.

Explanation:

I copy it from Google

Answer 2

$\Huge\fbox\pink{tracheae}$