Where is the world’s hidden groundwater? https://t.co/tE3bWAQaiu #environment #water pic.twitter.com/cn09WCZSez
— World Economic Forum (@wef) December 11, 2015
If all Earth hidden groundwater was brought to the ground how deep it would be ?
Thursday, December 10, 2015
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment