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Biodiversity, Conservation and Environmental Issues — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYBiodiversity, Conservation and Environmental Issues5 Marks
Question
Lake can literally get choked to death due to eutrophication.
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Answer

  1. Eutrophication means enrichment due to nutrients.
  2. Pollution due to human activities releases effluents through agricultural lands, industries and houses.
  3. Many of these contain phosphates and sulphates which cause excessive eutrophication.
  4. This leads to non-availability of oxygen for other aquatic organisms, mainly causing death of fish.
  5. The processes of decomposition of these dead fish adds to further depletion of oxygen and hence lake can literally get choked to death due to eutrophication.

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