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 layer definition. A band of ozone in the upper atmosphere. Ozone is a molecule made of three atoms of oxygen instead of the usual two. Note: The ozone layer absorbs harmful ultraviolet radiation from the sun and is thus very important to the health of human beings and other life forms on Earth.