Advertisements
Advertisements
प्रश्न
Write critical notes Groundwater depletion and ways for its replenishment
उत्तर
Ground water depletion and ways for its replenishment: - The level of ground water has decreased in the recent years. The source of water supply is rapidly diminishing each year because of an increase in the population and water pollution. To meet the demand of water, water is withdrawn from water bodies such as ponds, rivers etc. As a result, the source of ground water is depleting. This is because the amount of groundwater being drawn for human use is more than the amount replaced by rainfall. Lack of vegetation cover also results in very small amounts of water seeping through the ground. An increase in water pollution is another factor that has reduced the availability of ground water.
Measures for replenishing ground water:-
(i) Preventing over-exploitation of ground water
(ii) Optimizing water use and reducing water demand
(iii) Rain water harvesting
(iv) Preventing deforestation and plantation of more trees
APPEARS IN
संबंधित प्रश्न
State the cause of accelerated eutrophication
How does algal bloom destroy the quality of a fresh water body? Explain.
Explain how does the algal bloom eventually choke the water body in an industrial area?
List the events that reduce the Biochemical Oxygen Demand (BOD) of a primary effluent during sewage treatment.
List the events that lead to biogas production from waste water whose BOD has been reduced significantly.
"Determination of Biological Oxygen Demand (BOD) can help in suggesting the quality of a water body." Explain.
Write critical notes on Eutrophication
Write critical notes Biological magnification
Plenty of algal bloom is observed in a pond in your locality.
(a) Write what has caused this bloom and how does it affect the quality of water.
(b) Suggest a preventive measure.
Explain the role of microbes in cleaning sewage water into usable water.
Biomagnification is caused mainly by ______.
The green scum seen in the fresh water bodies is ______.
The loudness of a sound that a person can withstand without discomfort is about ______.
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 The correct matches is | iv. 1981 |
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 |