Water is known to be the universal solvent which has the ability to exists in all the three forms. The water exists in the form of ice at 0 °C .
It can also change its state and gets converted into liquid at 100 °C. More than 100 °C the liquid state of the water will get converted into gaseous phase.
So, at 0 °C water from the liquid state starts getting converted into solid phase and the molecules in the solid are more closely packed as compared to liquid state.
By injecting dead cells of the disease into the body, the body can analysis what it is supposed to be fighting off before it gets the active diseases. So if the body does actually get the disease then it knows how to fight it off and can have a better chance at doing it.
