Answer:
i think by their salinity (the saltiness or amount of salt dissolved in a body of water)
Explanation:
Water salinity is measured by passing an electric current between the two electrodes of a salinity meter in a sample of water.
G'day love! An elements atomic number is the amount of protons in an element!
Oxygen for complete combustion
DSVR because it only makes sense. Try it out and if it works give me a Brainly