Question

How do gills help in respiration in fish ? Name the respiratory organ of cockroach​

Answer 1

When the oxygen moves throughout the fish's body, it can then diffuse into areas that have too much carbon dioxide. This carbon dioxide will then be carried out of the bodies through the gills.

The respiratory system of a cockroach is called TRACHEA

Answer 2

when fishes breathe through their gills there is a flow of oxygen inside it through water and the oxygen mixes with blood which help them to respire.