Every bit of information I find just talks about water cycling through its different states of matter, I’m aware that water evaporates then rains and returns to the earth but none of them say at which point more water is actually produced or how. Is it actually renewable or is it the concept that there are other sources such as ice and humidity that can keep refilling our supply?
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> at which point more water is actually produced or how
Essentially no new water is produced, but also none is really lost or consumed – so it’s renewable in the sense that it just moves around between different locations and states of matter.
Like, when animals “use” water, water molecules aren’t being destroyed. All the water you drink ends up either in your tissues, or leaves in your pee, your breath, sweat, or feces and going back out into the world water cycle.
On the planetary scale, no water is leaving Earth so there’s no need for a mechanism continually producing it either. It just moves around between being liquid water on and under the ground, humidity in the air, falling rain, inside biomass (plants and animals), etc.
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