When two sound waves they can either add up or cancel out. By the way, this symbol () means blank as its just one-word that's missing from the question Thank You! :)

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.

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Matter that emits no light at any wavelength is called