Which one of the following statements is $NOT$ correct?
- AThe amount of some toxic substances of industrial waste water increases in the organisms at successive trophic levels.
- BThe micro-organisms involved in biodegradation of organic matter in a sewage polluted water body consume a lot of oxygen causing the death of aquatic organisms.
- CAlgal blooms caused by excess of organic matter in water improve water quality and promote fisheries.
- DWater hyacinth grows abundantly in eutrophic water bodies and leads to an imbalance in the ecosystem dynamics of the water body.
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