ECOLOGY
PROPERTIES OF POPULATIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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soon stabilize at the level it is today-about 7 billion
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begin to decrease until it reaches 5 billion
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increase for a short time and then decrease to current levels
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stabilize somewhere around 9 billion by 2050
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Detailed explanation-1: -In just 30 years, the world will look very different. Since 1950, the global population has grown from 2.5 billion to more than 7.7 billion. By 2050, however, that number is projected to reach just 9.7 billion.
Detailed explanation-2: -Day of Eight Billion While it took the global population 12 years to grow from 7 to 8 billion, it will take approximately 15 years-until 2037-for it to reach 9 billion, a sign that the overall growth rate of the global population is slowing. Yet levels of fertility remain high in some countries.
Detailed explanation-3: -The UN’s projections are now much closer to those by researchers at the University of Washington, who suggested two years ago that the human population would peak at significantly less than 10 billion by 2065, decline to less than 9 billion by 2100 and keep declining – the current world population is about 8 billion.
Detailed explanation-4: -The shares of Europe and Asia in the global population are expected to decrease, while the Americas will hold steady. 91India replaces China as the world’s most populous country: India’s population is expected to increase by 400 million by 2050.