The conservation of fresh water would be the "most energy-efficient way" to make sure the "planet has adequate water" for drinking.
<u>Explanation:</u>
Freezing ocean water, in the first place, would not be a good option as the ocean water would still be saline even after freezing it.
On the other hand, it would neither be feasible nor would it be economical to freeze the ocean water.
Though reverse osmosis and distillation are efficient methods of water treatment, it would not be possible to treat water enough to fulfill the drinking water need of the entire planet.
When residents of several Southern California cities were asked to draw maps of their residential areas, middle- and upper-income individuals included more details and area, while lower-income individuals included fewer details and area.
The minimum, maximum and average 2007 population of the cencus tracts in the city of Austin is (minimum)10883; (maximum) 8323732; (average 2007) 736677
