However, deforestation can be a consequence of building highways, shopping malls, or apartment complexes, or converting land to agriculture use. At least a forestry operation replants new trees to replace those it removes. Ozone depletion - The ozonosphere, a layer of air rich in ozone, encircles the earth at altitudes of six to thirty miles. Below lies the troposphere, the layer that contains clouds and the air we breathe. Above lies the stratosphere.
Ozone is a form of oxygen that can be created by electrical currents.
You may have actually smelled ozone after an electrical storm. In the ozone layer, ultraviolet and other short wavelength light from the sun convert normal oxygen into ozone, which prevents most of the shorter wavelengths from reaching earth, where they can be lethal to living organisms. The irony of ozone is that we have too much in some places and too little in others. Yet when hydrocarbons and other man-made substances reach the ozone layer, the process that creates ozone is disrupted. Hence the amount of ozone becomes depleted.