To estimate the Milky Way’s age, astronomers measure the elements found in the oldest stars in the Milky Way’s dense groupings of stars that make the halo shape, which are referred to as what?

The kinetic energy of the liquid increases. hope this !

Yes i think so not 100 percent sure though

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.