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प्रश्न
Why does the increased level of nutrients in the water affect the survival of aquatic organisms?
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उत्तर
An increase in the level of nutrients in a water body leads to an excessive increase in the population of algae in the water body. When these algae die, they serve as food for decomposers. A lot of oxygen is utilised in this process, consequently leading to a decrease in the level of oxygen dissolved in the water body. This in turn causes fishes and other aquatic organisms to die.
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संबंधित प्रश्न
List two main causes of the pollution of water of the river Ganga. State how pollution and contamination of river water prove harmful for the health of the people of neighbouring areas.
Why is forest considered a natural ecosystem?
State whether the following statement is true or false :
Chipko Andolan was associated with the conservation of wild animals such as tigers and lions.
What is a natural resource? Name three important natural resources.
The Chipko Andolan is associated with :
(a) Tigers
(b) Turtles
(c) Trees
(d) Tomatoes
List five things you have done over the last one week to −
increase the pressure on our natural resources
Expand the abbreviation GAP.
Which plan has been started by the government to control the pollution of Ganga?
The main cause for abundant coliform bacteria in the river Ganga is
The pH of water sample collected from a river was found to be acidic in the range of 3.5 – 4.5, on the banks of the river were several factories that were discharging effluents into the river. The effluents of which one of the following factories is the most likely cause for lowering the pH of river water?
