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Why Does the Increased Level of Nutrients in the Water Affect the Survival of Aquatic Organisms? - Science

Why does the increased level of nutrients in the water affect the survival of aquatic organisms?

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An increase in the level of nutrients in a water body leads to an excessive increase in the population of algae in the water body. When these algae die, they serve as food for decomposers. A lot of oxygen is utilised in this process, consequently leading to a decrease in the level of oxygen dissolved in the water body. This in turn causes fishes and other aquatic organisms to die.

Concept: Case Study: Ganga Pollution and Ganga Action Plan
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NCERT Class 8 Science Textbook
Chapter 18 Pollution of Air and Water
Q 11 | Page 251
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