Advertisements
Advertisements
प्रश्न
Explain the term eutrophication with suitable example
Advertisements
उत्तर
Eutrophication refers to alteration in the life of aquatic ecosystem due to increase in the concentration of certain organic compounds such as nitrates and phosphates. This generally occurs when fertilisers from a field are washed off by rainwater or irrigation to nearby ponds or rivers.
Example: Sudden increase in the population of algae or phytoplanktons in water body due to increase in the level of nutrients in water.
APPEARS IN
संबंधित प्रश्न
How do plants get nutrients?
Compare the use of manure and fertilizers in maintaining soil fertility.
Classify nutrients according to their sources.
Distinguish between farmyard manure and compost manure.
Explain advantages of irrigation.
Explain, how efficiency of irrigation can be increased.
Mention three different ways in which insect pests can attack the crop plant.
Compare between mixed cropping and intercropping. Write down from advantage of both of these techniques.
Discuss the various methods which are used to control plant diseases.
Which one is not a source of carbohydrates?
