Question

how is water useful for us

Answer 1

it acts as a solvent in d bodyfor thousand s of substances both organi and inorganic
it is used to produce digestive juices
it is used in the excretion of soluble waste
involved in maintenance of body temperature

Answer 2

Water is essential for every person. If no water-no life. It is useful in drinking water, bathing, washing clothes, etc. It is not possible to mention all because it useful in every situation. But unclean water is leads to diseases