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Khadins, Bundhis, Ahars and Kattas are ancient structures that are example for:
These are all ancient or traditional methods of water harvesting. These structures are prepared to capture and store rainwater for various uses. These structures are known by different names in different states of India.
The pH of water sample collected from a river was found to be acidic in the range of 3.5 — 4.5, on the banks of the river were several factories that were discharging effluents into the river. The effluents of which one of the following factories is the most likely cause for lowering the pH of river water?
Among the statements given below select the ones that correctly describe the concept of sustainable development:
(i) planned growth with minimum damage to the environment.
(ii) growth irrespective of the extent of damage caused to the environment.
(iii) stopping all development work to conserve the environment.
(iv) growth that is acceptable to all the stakeholders.