Which of the following statements is correct?
Eutrophication refers to increase in domestic sewage and waste water in lakes.
Biomagnification refers to increase in concentration of the toxicant at successive trophic levels.
Presence of large amount of nutrients in water restricts 'Algal Bloom'
Algal Bloom decreases fish mortality
Biomagnification is the increase in concentration of non-biodegradable pollutants at successive trophic levels. Eutrophication is the natural aging of a lake by nutrient enrichment, not just the increase in sewage. Algal blooms are caused by excess nutrients and often lead to increased fish mortality due to oxygen depletion.
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