Mainly to assist in predicting whether an area will flood or whether there will be a water shortage.
Because water is a neutral and high pH values are basic and low pH values are asidic.
BOD5 values are calculated at a fixed temperature as described in "Standard Methods for the Examination of Water and Waste Water" Highrer temperatures would lead to higher (wrong) values.
water
Few concrete values have been accepted as the standards for water testing. the are minimally accepted values and desired values for aspects like dissolved oxygen, ph, clarity, and dissolved nitrogen.
Mars and Venus might have had flowing water.
Why do scientists believe there might be water on the Moon?
conditions that might turn liquid water in to solid might be cold degres below zero
They might lose water via sweat. Also, a lot of water as water vapor is lost by breathing.
The Hounsfield unit of water is 0. It serves as the reference point in Hounsfield units, with densities higher than water having positive values and lower densities having negative values.
Hydrologists primarily study the distribution, movement, and quality of water on Earth. They analyze how water interacts with the atmosphere, soil, and rocks to understand the dynamics of water systems and how they impact the environment. Their research helps in managing water resources, predicting floods and droughts, and ensuring water sustainability.
Fresh water might run out.