Which city has taken several initiatives for harvesting rainwater to increase the level of groundwater?
Bengaluru
Chennai
Thiruvananthapuram
Vishakhapatnam
Which are the most popular methods of rainwater harvesting in cities?
Rainwater harvesting is a suitable option for recharging the groundwater level.
Rainwater harvesting cannot be carried out in cities.
Explain briefly, how rainwater harvesting is done from open spaces around the buildings in city areas.