Delhi's Indira Gandhi International Airport became "water-positive". This means it:
- Areturns more water to nature than it uses
- Btreats all of its own sewage
- Cuses only the rainwater it collects
- Duses no groundwater for any purpose
Show answer and explanation
Correct answer: (a) returns more water to nature than it uses
Explanation
A water-positive site returns more water to nature than it takes.