Question

3. How do cockroaches and other insects breathe
be the​

Answer 1

Answer:

They do this by using a very efficient breathing system that uses air filled tubes, called trachea, to deliver oxygen directly to cells.Oxygen in as required into the tracheal system

through valves on the insect called spiracles.But sometimes they shut their spiracles and stop breathing.

Answer 2

Answer:

They do this by using a very efficient breathing system that uses air filled tubes , called trachea, to deliver oxygen directly to cells .Oxygen flows in as required into the tracheal system through valves on the insects called spiracles .But , sometimes, the shut their spiracles and stop breathing