By fermentation, the yeast species Saccharomyces cerevisiae converts carbohydrates to carbon dioxide and alcohols â for thousands of years the carbon dioxide has been used in baking and the alcohol in alcoholic beverages.
In a memo last September, President Obama said the United States would admit up to 70,000 refugees to the United States during Fiscal Year 2015, as justified by humanitarian concerns or the national interest. The number breaks down as follows: Africa................................17,000.
Now, the UN expects that the by the end of 2013 there will be 3.5 million Syrian refugees and that a further 1.9 million people in the region will need help as a result of Syria's crisis. The UN agency has detailed plans about how best to address the needs of those refugees in 2013.