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प्रश्न
Human population was estimated to be 7.9 billion in ______.
विकल्प
2000
2005
2021
2015
MCQ
रिक्त स्थान भरें
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उत्तर
Human population was estimated to be 7.9 billion in 2021.
Explanation:
The exercise identifies 2021 as the year when the estimated human population reached 7.9 billion. The other listed years do not match that estimate.
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