Question

Although the concept of sustainability is appealing, it is subject to two principal issues, ________ and ________.

a) the lack of private initiatives; high budget deficits

b) how to increase the current employment rate; the challenges of attracting foreign investments

c) how to think about population growth; the difficulty of predicting future technological progress and innovation

d) the slow growth of the renewable energy industry; the difficulty in curbing emissions of greenhouse gases in developing countries

Answer

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