A microscope has an ocular lens of 5x. The three objective lenses are 20x, 40x and 60x. What is the total magnification at high, medium and low
power?

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.

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Ibelieve the answer is balance! hope my answer has you : )