ornithologist observed decline in the bird population in an area near a lake after the setting of an industrial unit in the same area. explain the cause responsible for the decline observed
Answers
This is due to the pollution of lake water by the DDT from the industries. The fish present in the water consumed those DDTs and later it is mixed in the food chain. Birds that consume those breaths are also affected as DDT calcium affects metabolism. As a result, the egg shell of the birds is not developed properly, causing the initial breakdown of the sphere and the embryo is less developed. After the establishment of the industrial unit in the same area, the bird population falls in one area near the lake.
• Stack smoke from thermal power plants, forest fires, volcanic eruptions etc.
• Garbage disintegration also discharges undesirable gases in the air.
• Excessive use of fossil fuels by automobile and industries release particles and air pollutants.
• Use led gasoline..
The main thing that is responsible for this is the lake water contamination.
It is mainly due to the industries that use DDT which results in this.
When the DDT is mixed in water, then the fishes die that automatically disrupt the food chain and food web.
It disturbs the calcium metabolism and then automatically everyone is effected.