Ozone (O3) is a form of oxygen, naturally occurring molecule made up of three atoms of Oxygen (O). Most ozone resides in the stratosphere, where it acts as a shield to protect Earth’s surface from the sun’s harmful ultraviolet radiation. Ozone does occur naturally at a ground level as plants and soil release some. Some migrates down from the stratosphere as thunderstorm’s downdrafts carry ozone from higher altitudes to nose level.

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