In the last 20 years, the proportion of the world population living in extreme poverty has..., almost doubled, remained more or less the same, almost halved, How many years did it take for the average global life expectancy to increase from 50 years to 70 years?How many years did it take for the average global life expectancy to increase from 50 years to 70 years?, 100 years, 50 years, 25 years, There are 2 billion children in the world today, aged 0 to 15 years old. How many children will there be in the year 2100, according to the United Nations?, 4 billion, 3 billion, 2 billion, How many of the world's 1-year-old children today have been vaccinated against at least one disease?, 20%, 50%, 80%, What is the average number of babies born per woman globally today?, 5, 2.5, 4, Where do the majority of people live today?, Low-income countries, Middle-income countries, High-income countries, What percentage of adults worldwide are literate?, 40%, 60%, 80%, What percentage of the world's population has access to electricity?, 20%, 50%, 80%, In 1996, tigers, giant pandas, and black rhinos were all listed as endangered. How many of these species are more critically endangered today?, Two, One, None

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