This causes the plants to die and as they decompose, all the oxygen in the water is used up.
(they; decompose; ) (all the oxygen in the water; is used up; ) (This; causes; the plants to die) Context(This causes,List([0, 11))):(the plants; to die; )
This causes,List([0, 11))
they all the oxygen in the water This the plants
decompose is used up causes to die
the plants to die