Fish maintain water flow over their gills by swimming rapidly with their
mouths open or by taking in water through their mouths.
TRUE
FALSE

this is false fish only have water flow through there gills not mouths and thay dont have to be swimming

halogen, any of the six nonmetallic elements that constitute group 17 (group viia) of the periodic table. the halogen elements are fluorine (f), chlorine (cl), bromine (br), iodine (i), astatine (at), and tennessine (ts).