Ballast water can contain aquatic plants, animals, and pathogens that can be introduced to an estuary when it is discharged near ports.
(Ballast water; can contain; aquatic plants, animals, and pathogens that can be introduced to an estuary) (aquatic plants, animals, and pathogens; can be introduced; to an estuary) (it; is discharged; L:near ports)
Ballast water aquatic plants, animals, and pathogens it
can contain can be introduced is discharged
aquatic plants, animals, and pathogens that can be introduced to an estuary
to an estuary
L:near ports