There is no water in the world that can never run out
The answer is: tears.
Tears are caused by emotional stimuli such as sadness, joy, anger, etc. When people experience these emotions, tears flow naturally, helping us release emotions and keep our bodies healthy. Since emotions are continuous, tears are also a constant source of water.
In contrast, the planet's freshwater resources are finite, and many regions have been depleted or polluted. Therefore, we should cherish every drop of water, protect water resources, and avoid waste and pollution.
In addition to tears, there are other waters that can never be used up, such as seawater. Seawater is one of the most abundant water resources on Earth, but it cannot be directly consumed by humans because it contains high concentrations of salt and other harmful substances. However, with desalination technology, we can convert seawater into drinkable freshwater for human use.
In addition, rainwater is also one of the endless water resources. Whenever it rains in the sky, the rain moistens the earth, replenishing surface and groundwater. While the popularity of rain is influenced by climate and geographical location, it is renewable in many regions.
In short, tears, seawater, and rain are endless water resources. We should cherish these resources and use them wisely to protect the earth's water resources and meet human needs.