Is Earth's Water Supply Forever? A Look at the Water Cycle

[kit_hung]

It's a common phrase we hear: "The amount of water on Earth is constant." It sounds simple, but how do scientists know this to be true? The answer lies in the water cycle—a continuous, global process that moves and recycles water.

The idea that water is constant is based on the principle of a closed system. For the most part, Earth doesn't lose or gain significant amounts of matter, including water, from space. The water we have today is the same water that existed billions of years ago. It just moves around and changes form.

 

[magnus2022]

Nature is very complex and highly regulated! The universe is balanced and will responds accordingly to adjust any contrary action against the natural laws.

 

[eLdavis]

More like the water is being recycled from time to time so the amount of water on earth remains finite but can become unavailable due to some factors.