Breathing is when a gill converts from oxygen in water into oxygen in blood.
All fish have gills .
Breathing is when fish convert from oxygen in water to oxygen in blood.
When fish convert oxygen in water to oxygen in blood this is called?
(A) evaporation
(B) barrel-shaped
(C) motility
(D) Heart rate
(E) squeeze
(F) breathing
(G) hormones
(H) survival