Fertility - the current rate, demographers expect the world...

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Fertility Fertility refers to the number of children born to an individual or a population. • The most basic measure of fertility is the crude birth rate —the number of live births per 1,000 people in a population in a given year. The crude birth rate is used to gauge fertility because it is based on the entire population and does not take into account the variables that affect fertility, such as age and marital status. • In 1998, there were 3.9 million live births in the United States, yielding a crude birth rate of 14.4 per 1,000. This rate was down slightly from 16.6 per 1,000 in 1990. • Despite a worldwide drop in fertility rates, population is increasing, with the world adding 78 million more people every year—the population of France, Greece, and Sweden combined—or the equivalent of a city the size of San Francisco every three days! Each day in 2000, there were 359,000 births and 149,000 deaths, resulting in a net gain of 210,000 humans added to the planet. At
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Unformatted text preview: the current rate, demographers expect the world population to be nearly 9 billion by mid-century, about 50% more people than in 2000. The level of fertility in a society is associated with social, as well as biological factors. For example:- Countries that have high rates of infant and child mortality often have high birth rates. By having many children, parents in these nations are more likely to see a few of them survive to adulthood.- In nations without social security systems to provide old-age insurance, parents may view children as an insurance plan for their old age.- In patriarchal societies, having many childrenespecially sonsis proof of manliness.- In cultures in which religion dictates that children are God-given and family planning is forbidden because it interferes with Gods will, many more children are usually born....
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This note was uploaded on 11/08/2011 for the course SCIE SYG2000 taught by Professor Bernhardt during the Fall '10 term at Broward College.

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