PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoIn a village in Karnataka, people started cultivating crops all around a lake which was always filled with water. They added fertilisers to their field in order to enhance the yield. Soon they discovered that the waterbody was completely covered with green floating plants and fishes started dying in large numbers. Analyse the situation and give reasons for excessive growth of plants and death of fish in the lake.
Overuse of fertilisers, which contain chemicals, led to their being washed into the lake by rain and underground water passages. This aided the in the lake, which prevented the fish from getting enough and other nutrients, leading to the fish's death.
Answer variants:
phosphate and nitrate
growth of aquatic plants
sunlight and dissolved oxygen
Register for free to see more content