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प्रश्न
The fresh water available on earth is only 3%. We cannot increase the amount of water. In that case, how can sustain the water level?
उत्तर
- The sewage water treatment is to be adopted.
- Decrease the usage of pesticides, insecticides, and fertilizers in agriculture.
- Protect forest and trees.
- Adopt drip irrigation and sprinkler irrigation in agriculture.
- Rainwater harvesting should be implemented in every building.
- Create awareness about the impact of throwing wastes into the water bodies.
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संबंधित प्रश्न
List three problems which arise due to construction of big dams. Suggest a solution of these problems.
Khadins are used in Rajasthan to :
(a) hold water for irrigation
(b) recharge groundwater
(c) promote soil erosion
(d) trap wild animals
Answer the following question.
List two main advantages associated with water harvesting at the community level.
Answer the following question.
Write two causes for the failure of sustained availability of groundwater.
In our country, there are attempts to increase the height of several existing dams like Tehri and Almati, dams across Narmada. Choose the correct statements among the following that are a consequence of raising the height of dams.
(i) Terrestrial flora and fauna of the area are destroyed completely.
(ii) Dislocation of people and domestic animals living in the area.
(iii) Valuable agricultural land may be permanently lost.
(iv) It will generate permanent employment for people.
______ is the only way to conserve rainwater.
Define – Freshwater.
Write the advantages of Wastewater treatment.
- Locate and name the water reservoirs in Figures (a) and (b).
- Which has an advantage over the other and why?
(a)
(b)
Sublimation is the conversion of solid into a liquid.
