Answer:
(i)
Suppose presently a particular country is quite developed. We would certainly
like this level of development to go up further or at least be maintained for future
generations.
(ii) Since the second half of the 20th
century, a number of scientists have been warning that the type and levels of
development are not sustainable.
(iii) Groundwater is an example of
renewable resource. But if we use more than what is replenished by nature, then
we would be overusing this resource.
Once the non-renewable resources would be
exhausted, we won't be able to use them in future. So using the resources
judiciously will help in maintaining the sustainability of development of our
ecosystem.
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