Global Journal of Science Frontier Research, H: Environment & Earth Science, Volume 22 Issue 1

Trend of air pollution in the world is shown in figure 1.3. It is good to see that world deaths are consistently decreasing. The decreasing rate is 1.87 per 100,000 people per year. According to World Health Organization, Air Pollution causes 7 million premature deaths a year( 02 ). The World Health Organization (WHO) said air pollution was now one of the biggest environmental threats to human life, leading to seven million premature deaths a year. Life Expectancy Life expectancy is a statistical measure of the average time the human are expected to live, based on the year of its birth, its current age, and other demographic f actors including sex. The most commonly used measure is life expectancy at birth (LEB). The factors that help increase human life expectancy are better health care and hygiene, healthier life styles, sufficient food and improved medical care and reduced child mortality mean that people can expect to live much longer than our ancestors just a few generations ago. Despite some odds, especially in the pollution sector, world death rate is declining. As a result, world life expectancy is increasing. This is depicted in Table 2.1 and Figure 2.1. Table 2.1: World Crude Death Rate Crude Rateper 1000 people Year 1960 1970 1980 1990 2000 2010 2020 Rate 17.712 11.994 10.272 9.226 8.592 7.888 6.09 Fig. 2.1: Trend in World Death Rate y = - 1 . 871 x + 3836 . R² = 0.995 0 20 40 60 80 100 120 1980 1990 2000 2010 2020 Trend in Global Death Rate due to Air Pollution (per 100,000 people) Death Rate Linear (Death Rate) y = - 0 . 146 x + 302 . 0 R² = 0.782 0 2 4 6 8 10 12 14 16 18 20 1940 1960 1980 2000 2020 2040 World Death Rate (per 1000 people) Rate Linear (Rate) 1 Year 2022 1 © 2022 Global Journals Global Journal of Science Frontier Research Volume XXII Issue ersion I VI ( H ) Global Environmental Pollution and Its Effect on Life Expectancy Fig. 1.3: Global Death Rate due to Air Pollution a)