Ozone molecules.
Ozone is a gas that is naturally present in our atmosphere, mostly in a region of the stratosphere, also known as the ozone layer. It's between about 10 km and 50 km above the surface of the earth and extends
over the entire globe with some variation.
The ozone in the stratosphere is considered good because
it absorbs ultraviolet- B (UV-B) radiation from the Sun . If not absorbed,
radiation would reach Earth’s surface in higher amounts that would be more harmful.
