What is science notation

Which statements describe the movement of ocean currents around the globe? check all that apply. strong winds force warm water to sink to the ocean floor. the coriolis effect causes warm and cold water to mix. cool dense water sinks to the ocean floor. warm water replaces cool surface water. wind blowing parallel to the shore causes upwelling of cool water.

Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?

Which change would make the diagram correct?