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?What is the estimated surface coverage of permanent freshwater bodies

(20 נק') - שאלה #178604

What is the volume of groundwater that is recharged per year around the world?

(20 נק') - שאלה #178605

Light greywater originates from:

(20 נק') - שאלה #178606

Water withdrawal is defined as:

(20 נק') - שאלה #178607

What was the percentage of people on earth that lived under freshwater shortage in the beginning of the 20st century, and what was that percentage in the beginning of the 21st century?

(20 נק') - שאלה #178608