As they are slowly broken down in water, they deprive aquatic organisms of the oxygen they need to survive.
(they; are slowly broken down; L:in water) (they; deprive; aquatic organisms of the oxygen) (they; need; to survive) Context(they need,List([86, 95))):(they; need to survive to survive; )
they need,List([86, 95))
they they they they
are slowly broken down deprive need need to survive to survive
L:in water
aquatic organisms of the oxygen
to survive