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Human Environment - Settlement, Transport and Communication — Social Studies STD 7 — Question

CBSE BoardEnglish MediumSTD 7Social StudiesHuman Environment - Settlement, Transport and Communication5 Marks
Question
What is Susu? Why is it useful?
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Answer

  1. Susu is a variety of dolphin found in the fresh water of rivers Ganga and Brahmaputra.
  2. This variety is also called the ‘blind dolphin’.
  3. Its presence in a river is an indication of the health of the river.
  4. However, dumping of untreated industrial and urban wastes having high amount of chemicals are killing this species in large numbers.

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