I can help with 2:
The consequences of not investing in renewable resources depends more on where the funds are actually going: Nuclear energy is a safe and reliable alternative, however, if the funds are directed to fossil fuel energy for instance, the economic results can be negative.
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At 3.6 million square miles (9.4 million square kilometers), the Sahara, which is Arabic for "The Great Desert," engulfs most of North Africa. The desert covers large sections of Algeria, Chad, Egypt, Libya, Mali, Mauritania, Morocco, Niger, Western Sahara desert.hope this helps!!!