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For example, a population's life expectancy at birth is the same as the average age at death for all people born in the same year Longevity is best thought of as a term for general audiences meaning 'typical length of life' and specific statistical definitions should be clarified when necessary Also see "Longevity" on Wikipedia  Pollution action of making the air, water, etc dirty and dangerous is polltion Toxic pollution affects more than 0 million people worldwide, according to Pure Earth , a nonprofit environmental organization In some of the world's worst polluted places, babies are born with birth defects, children have lost 30 to 40 IQ points, and life expectancy may be as low 4 जनसंख्या वृद्धि का कारण Causes of Population Explosion in Hindi 41 1 बढ़ती जन्म दरें (Rising birth rates) 42 2 शिशु मृत्यु दर में कमी (Infant mortality rate) 43 3 जीवन प्रत्याशा में वृद्धि Retirement Planning Higher Life Expectancy Shorter Work Spans Mean A Longer Retirement Peri...