Sustainable Development - It means when resources which are limited are judiciously used or conserved for the future generation to sustain, that issue can be called as sustainable development.
Its important because there are some kinds of resources in our nature that are limited in quantity and are to be taken care of and conserved for our future use and future generation so that our future doesn't lack that particular resource.
(FOR MORE INFORMATION YOU CAN REFER CLASS X GEOGRAPHY 1st CHAPTER & CLASS X ECONOMICS 1st CHAPTER)
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