Advertisements
Advertisements
प्रश्न
Why does the increased level of nutrients in the water affect the survival of aquatic organisms?
Advertisements
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.
संबंधित प्रश्न
Out of the two-reuse and recycle-which, in your opinion, is better to practise? Give reason.
Give one example each from your daily life where the domestic waste can be effectively reused and recycled.
What are the different ways in which water gets contaminated?
State whether the following statement is true or false :
Chipko Andolan was associated with the conservation of wild animals such as tigers and lions.
Write a short note on 'Chipko Andolan' (Hug the Trees Movement).
What measures would you take to conserve electricity in your house?
The Chipko Andolan is associated with :
(a) Tigers
(b) Turtles
(c) Trees
(d) Tomatoes
Expand the abbreviation GAP.
The pH range most conducive for the life of freshwater plants and animals 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?
