water is very essential for life because 60%to70%our body weight is water.we can survive for several weeks without food but would die in a few days without water.
Importance of water:
a.Acts as a solvent in which chemicals dissolve
b.Acts as a transporting agent for digested food,excretory products,hormones and antibodies
c.Takes part in biochemical reactions (for example:digestion)
d.A major component of blood,body fluids,digestive juices and urine
e.Regulates body tempeature by evaporation of sweat from the skin
We require at least 1.5 litres of water daily to replace water lost in sweat,urine,faeces and exhaled air