Answer: Cleaner air, because removing salt from seawater requires burning a lot of fossil fuel.
The Arab world, especially the Gulf countries, face many environmental threats and problems like desertification, biodiversity loss, marine and coastal areas pollution, and water scarcity and quality. Beside these traditional environmental threats, various other environmental problems have begun to emerge within the previous couple of years, associated with military conflicts, construction and demolition debris, and temperature change.
Traditional and emerging environmental threats are all interlinked. for example, desertification ends up in biodiversity loss; livestock increase and overgrazing ends up in desertification; waste-dumping releases methane, which adds to the world warming problem, successively resulting in desertification, water scarcity, and lots of other ecological disasters.