The apartheid was originally brought out by the Boers! Hope this helps
Some of this energy will be converted into heat due to the friction between the molecules in the microphone. ... The speaker components that move will gain some heat energy in the process. Finally, the medium through which sound travels, be it air, water or something else, will actually gain heat from the sound.
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I think it’s D I don’t know for sure tho but I think it’s that hope you get it correct
Explanation: