4. Which is an example of convection? You fry a hamburger in a pan. Hot air rises up a chimney, drawing cool room air into the fireplace. Heat from a burning log causes the iron grate beneath it to glow. You heat your cold hands as you stand near a campfire.

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.

The think of process to make something successful