Chestionar: care credeti ca este varsta medie a populatiei Terrei?

• 20 March, 2012
• Imagini

Raspunsul – pe site-ul CIA: The world’s fact book
via regu.la

Hint:

Nearly half of the world’s population (almost 3 billion people) is under the age of 25.
http://www.wpf.org/reproductive_rights_article/facts

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