Advertisements
Advertisements
प्रश्न
Excessive nutrients in a fresh water body cause fish mortality. Give two reasons.
उत्तर
Release of nutrient-rich sewage and industrial effluents leads to the introduction of nutrients such as nitrogen and phosphorus and increase in temperature and BOD of the water body, causing increased biological activity, which further leads to algal blooms. This reduces the dissolved oxygen in the water body, thereby causing fish mortality.
APPEARS IN
संबंधित प्रश्न
How do snails, seeds, bears, zooplanktons, fungi and bacteria adapt to conditions unfavourable for their survival?
List the different attributes that a population has and not an individual organism.
Write a short note on Effect of temperature or water scarcity and the adaptations of animals.
What is population density?
Explain any three different ways the population density can be measured, with the help of an example each.
Which of the following is an adaptation in kangaroo rat to avoid water loss?
