The ozone layer
In addition to the gases that
produce greenhouse effect, there are other so-called chlorofluorocarbons
that seriously damage the ozone layer.
It's called hole in the
ozone layer to a decrease in the density of this gas on the layer that
covers Antarctica. It has been observed that this phenomenon occurs every
spring, roughly from mid-August until December.
The problem is that the
function of this gas composed of three atoms of oxygen, is to prevent the
passage of ultraviolet rays from the sun to us for being harmful to health. By
reducing its presence, these rays pass through the atmosphere more easily.
This gas is produced by
certain types of aerosols and refrigerators and freezers. But thanks to the
policy measures taken, their production has fallen more than 80% since the signing
of the Montreal Protocol in 1987. The problem is that in industries is
increasing yearly production of substances harmful to the
ozone.
|
