Abiologist identifies an organism that lives in the gills of a fish and consumes the fishs blood. what type of relationship do the organism and the fish have

they have an endosymbiotic relationship, a type of symbiosis in which one of the symbiotic organisms lives inside the other.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.