Advertisements
Advertisements
Question
What is Biochemical Oxygen Demand significance in an aquatic ecosystem?
Solution
Significance in an Aquatic Ecosystem :
BOD ∝ input of organic wastes
If BOD is increased dissolved oxygen is decreased in water. The higher amount of organic waste increases the rate of decomposition in water. O2 is rapidly consumed by microbes, thereby causing the drop in dissolved oxygen content in water
APPEARS IN
RELATED QUESTIONS
State the cause of accelerated eutrophication
Name the two different categories of microbes naturally occurring in sewage water.
List the events that lead to biogas production from waste water whose BOD has been reduced significantly.
Write critical notes Groundwater depletion and ways for its replenishment
Explain the role of microbes in cleaning sewage water into usable water.
The expanded form of DDT is ______.
Which one of the following diseases is not caused due to contamination of water?
Match the items in column I and column II and choose the correct option:
Column I | Column II |
A. UV | i. Biomagnification |
B. Biodegradable Organic matter | ii. Eutrophication |
C. DDT | iii. Snow blindness |
D. Phosphates | iv. BOD |
The correct match is:
Match the following and choose the correct option.
Column I | Column II | |
A. | Environment Protection Act | i. 1974 |
B. | Air Prevention & Control of Pollution Act | ii. 1987 |
C. | Water Act | iii. 1986 |
D. | Amendment of Air Act to include noise as an air pollutant | iv. 1981 |
The correct matches is;
Match the following and choose the correct option.
Column I | Column II | ||
A. | Environment Protection Act | i. | 1974 |
B. | Air Prevention & Control of Pollution Act | ii. | 1987 |
C. | Water Act | iii. | 1986 |
D. | Amendment of Air Act to include noise as an air pollutant | iv. | 1981 |