sand clock. realistic hourglass. water scarcity. sandglass with drops falling flow. drought in africa desert. thirsty

hourglass sandglass clock water scarcity sand realistic drought desert arid thirsty timer glass depletion dehumidify drop fall flow africa summer aqua ecology resource freshwater shortage dehumidification time thirst watch countdown measure measurement chronometer parched timepiece hour warming environment counting ground soil lacking earth stopwatch climate liquid vector object isolated illustration