These structures are central to the GOLT hypothesis, which describes changes in the morphology of WBEs due to global warming. Cymothoa exigua is a parasite that enters hosts through these structures. These structures form the exit point in streamlined organisms that utilize ramjet ventilation. Rakers in these structures filter food particles and these structures (10[1])are supported by either bony or cartilaginous (10[1])arches. (10[1]-5[1])Unlike most salamanders, external examples (10[1])of these (10[1])structures (10[1])on stalks are present on adult axolotls. (10[1])In some organisms, these structures require a constant flow of water over them to prevent drowning. (10[1])For 10 points, name these respiratory structures that enable fish to breathe underwater. ■END■ (10[2])