Describe why an aging population has caused a shortage of workers in Singapore.

First of all, this issue of ageing workforce is not unique to Singapore. From various published reports we know for a fact that the world’s population as a whole is ageing - and this is true of the Asia region too. Today Asia accounts for one-half of the world’s older population.

By 2050 this is set to increase to two-thirds. By every measure, Japan has the oldest population - not just in Asia, but globally. Singapore is not far behind with ageing populations on a par with Europe where the challenge of the ageing population is widely recognised and hotly debated.

With the highest median ages, longest life expectancy rates and among the lowest fertility rates in the region, Singapore is already facing the immediate challenges of declining populations and talent shortages.

At current birth rates and without immigration, Singapore’s citizen population will start to age and shrink. Between 2011 and 2030, the median age of the citizen population will rise from 39 years to 47 years.

Explanation:

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explanation:

be cause we need them

answer:   migrations were important in the neolithic period. "two major migrations passing through southeastern europe were confirmed by the means of archaeo-genetic studies."

the first migration was the early neolithic period -- 6,000 before common era (bce) -- when the first farmers, from anatolia -- asia minor -- spread through europe. the second migration occurred during the early bronze age (3,000-2,500 bce) when the so-called "steppe population," from the eurasian steppe, replaced much of northern europe's previous population.

the first farmers of northern and western europe passed through southeastern europe with limited hunter-gatherer genetic admixture, which occurs when two or more previously isolated populations begin interbreeding. however, some groups that remained mixed extensively -- without the male-biased, hunter-gatherer admixture that prevailed later in the north and west, according to latest discoveries. southeastern europe continued to be a nexus between east and west, with intermittent genetic contact with the steppe people up to 2,000 years before the migrations that replaced much of northern europe's population.

"in some places, hunter-gatherers and incoming farmers seem to have mixed very quickly," says iain mathieson, a geneticist at the university of pennsylvania, who was first author of the paper. "but, mostly, the two groups remained isolated, at least for the first few hundred years. these hunter-gatherers had been living there for thousands of years, and it must have been quite a shock to have these new people show up -- with a completely different lifestyle and appearance."