Water Pollution and its Control
Question
Natural ageing of lake by biological enrichment of its water is called
Easy
Solution
Eutrophication is a natural process which literally means well nourished or enriched. It is a natural state in many lakes and ponds which have a rich supply of nutrients. Eutrophication becomes excessive when abnormally high amount of nutrient from sewage, fertilisers, animal wastage and detergent, enter streams and lakes causing excessive growth or blooms of microorganisms. With increasing eutrophication, the diversity of the phytoplankton community of a lake increases and the lake finally becomes dominated by blue - green algae.
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