Which conclusion can be made about ocean currents from the activity? O Energy from the atmosphere causes convection of water, forming ocean currents.
O Surface wind change the density of water in the ocean, causing ocean currents to sink.
Ice found near Earth's poles add more salt to the ocean, forming ocean currents.
OHeat from Earth's interior creates pockets of warm air, causing ocean currents to circulate.

Change in speed or direction : )

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.