Hydrilla - the most problematic aquatic plant in the U.S., it forms extensive surface mats that destroy freshwater fish habitat and recreation areas.
(it; forms; extensive surface mats that destroy freshwater fish habitat and recreation areas) (extensive surface mats; destroy; freshwater fish habitat and recreation areas)
it extensive surface mats
forms destroy
extensive surface mats that destroy freshwater fish habitat and recreation areas
freshwater fish habitat and recreation areas