A river with an inflow of domestic sewage rich in organic waste may result in:

A river with an inflow of domestic sewage rich in organic waste may result in:
  1. Drying of the river very soon due to algal bloom.
  2. Increased population of aquatic food web organisms.
  3. An increased production of fish due to biodegradable nutrients.
  4. Death of fish due to lack of oxygen.

Solution

A river with an inflow of domestic sewage rich in organic waste will reduce the dissolved oxygen (DO) and may result in death of fish due to lack of oxygen.

Asked in: NEET 2016 (Phase 1)

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