Rajasthan is among the states working on land restoration. It has adopted techniques such as contour bunding, afforestation and other soil conservation measures to reduce erosion and improve soil fertility in degraded areas.
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Copper smelting plants are best located in Rajasthan and Jharkhand because both states have rich copper ore deposits, availability of power, transport, water and labor. Industrial infrastructure and proximity to mining areas reduce transport costs and enhance profitability.
Despite Project Tiger, conservation remains difficult due to poaching, habitat loss and human–wildlife conflicts. Deforestation and illegal wildlife trade reduce tiger populations, while limited awareness and weak enforcement hinder long-term protection and ecological balance.
Correct Option is (b). Chennai became the first Indian city to make rainwater harvesting compulsory for all buildings. This initiative improved groundwater recharge, reduced water scarcity and set an example for sustainable water management in other Indian cities.
Correct Option is (a). States like Madhya Pradesh, Himachal Pradesh and Odisha contain vast areas of reserved forests, managed by the government for conservation. These forests restrict human activity and aim to preserve biodiversity and maintain ecological balance.