Answer:
A. 18
Explanation:
Sulfur number sixteen forms a negative
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The answer can be explained when you burn something cleanly (with a very hot item) or not. With a candle lots of Carbon dioxide is producted but when using a bunson burner hardly any CO2 is produced.
The speed and wavelength changes as a waves travels to a different depth. Slower and bigger amplitudes in shallower depths. Freq does not change
Coins or anything copper
Explanation
They are everyday objects that turn green.
The answer is C as it slowly destroys the ozone layer
