Just something I was pondering about the water cycle, rising sea levels etc.
Water is a waste product of lots of natural processes: respiration, combustion being two obvious ones. Are there any estimates of how much new water is created on Earth each day/year/whatever. Is it in any way significant compared to the massive volume of water already here?
I read about the extraction of groundwater (which is essentially “new” to the water cycle), which according to Wikipedia could account for around 6% of observed sea level rises since 1900 (cite), but what about all the water produced from burning fossil fuels, and from cell respiration?