Millennials attend a watch party for the last presidential debate between Donald Trump and Hillary Clinton at Capitol Lounge on Pennsylvania Avenue, SE, October 19, 2016. Hereâs Why Millennials May Not Come Out to Vote in 2016.
See more related lessons here. The Ozone Layer This is simply a layer in the stratosphere containing a relatively high concentration of ozone. The earth's atmosphere is divided into several layers, and each layer plays an important role. The first region extending about 10km upwards from the earth's surface is called the troposphere.
Ozone is a form of oxygen. The molecule contains three oxygen atoms (.) Ozone is unstable and will readily combine with other atoms. Ozone is found in the stratosphere, where it blocks the sun's ultraviolet (UV) waves and prevents them from reaching the earth's surface.