A bird has a kinetic energy of 3 J and a potential energy of 25 J. What is the mechanical energy of the bird? 33, because mechanical energy is the same as kinetic energy O22 3, because mechanical energy is the difference of the potential energy and kinetic energy O253, because mechanical energy is the same as potential energy O28 3, because mechanical energy is the sum of the potential energy and kinetic energy

Dsolubility let me know if you have any other questions for chemistry

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.