They absorb nutrients and other forms of pollution, improving the water quality of the pond.
(They; absorb; nutrients and other forms of pollution; improving the water quality of the pond) Context(They absorb,List([0, 11))):(They; absorb nutrients and other forms of pollution improving; the water quality of the pond)
They absorb,List([0, 11))
They They
absorb absorb nutrients and other forms of pollution improving
nutrients and other forms of pollution improving the water quality of the pond
the water quality of the pond