Advertisements
Advertisements
Question
What is cultural eutrophication?
Advertisements
Solution
Pollutants from man’s activities like effluents from industries and homes can radically accelerate the ageing process. This phenomenon has been called Cultural or Accelerated Eutrophication.
APPEARS IN
RELATED QUESTIONS
What are the various constituents of domestic sewage?
Water samples were collected at points A, B and C in a segment of a river near a sugar factory and tested for BOD level. The BOD levels of samples A, B and C were 400 mg/L, 480 mg/L and 8 mg/L respectively. What is this indicative of? Explain why the BOD level gets reduced considerably at the collection point C?
Algal bloom results in ______.
A high Biological oxygen demand (BOD) indicates that ______.
The polluting strength of sewage is usually characterized by its ______.
World’s most problematic aquatic weed is ______.
Which one of the following impurities is easiest to remove from wastewater?
Algal blooms impart a distinct colour to water due to ______.
Name an industry which can cause both air and thermal pollution and as well as eutrophication.
What is an algal bloom?
What are the three major kinds of impurities in domestic wastewater?
Is it true that if the dissolved oxygen level drops to zero, the water will become septic. Give an example which could lower the dissolved oxygen content of an aquatic body.
How has DDT caused decline in bird population?
Observe figure and answer the following questions.
Biomagnification of DDT in an aquatic food chain
- What ecological term is used to describe the DDT accumulation at different trophic levels?
- List any one effect of DDT accumulation on birds
- Will DDT accumulation lead to eutrophication?
- Does it affect the BOD?
- Name disease caused by accumulation of any heavy metal.
