carrying capacity lower global fertility rate estimate at 9 to 10 billion individuals maximum population the Earth can support live science Earth’s population LiveScience ten billion source 10 billion 10 billion people una proiezione di livescience maximum number of people the Earth can sustain Земята може да изхрани 10 милиарда души maximum number of people the Earth can sustain maximum population the Earth can support the earth can support a far greater population lower global fertility rate https://www.livescience.com/ what is the sustainable population of earth maximum population the Earth can support carrying capacity Earth’s population maximum number of people the Earth can sustain 最大承载力 only support roughly 10 billion una proiezione di livescience 9 billion by 2050