$A$ river with an inflow of domestic sewage rich in organic waste may result in
- Aan increased production of fish due to biodegradable nutrients
- Bdeath of fish due to lack of oxygen
- Cdrying of the river very soon due to algal bloom
- Dincreased population of aquatic food web organisms.
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Similar Questions
The dental disease characterized by mottling of teeth due to the presence of a specific chemical in drinking water is caused by which of the following elements?
Which of the following is a biodegradable pollutant?
Easy
View SolutionAcid rain:
$(a)$ Causes necrosis
$(b)$ Converts chlorophyll-$a$ into phaeophytin
$(c)$ Responsible for formation of $PAN$
$(a)$ Causes necrosis
$(b)$ Converts chlorophyll-$a$ into phaeophytin
$(c)$ Responsible for formation of $PAN$
Medium
View SolutionThe expanded form of $BOD$ is:
Easy
View Solution$A$ - Micro-organisms involved in the biodegradation of organic matter in the receiving water body consume a lot of oxygen,and as a result,there is a sharp decline in dissolved oxygen in the stream from the point of sewage discharge.
$R$ - $BOD$ decreases when the dissolved oxygen amount decreases in water.
$R$ - $BOD$ decreases when the dissolved oxygen amount decreases in water.
Medium
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