The major causes of ozone layer depletion are the release of toxicant otherwise
known as pollutant into the atmosphere, this pollutant will react with ozone
and convert to it into compound that are protective against ultraviolet solar radiations.
Most of these compounds are the chlororflourocarbons, hydrochlorofluorcarbons, carbon tetrachloride,
methyl chloroform and halons , this
halon are very destructive and can cause a damage 10 times than other chemicals
like cflc. This ozone depleting substance can stay in the atmosphere for years
and ones they reach the stratosphere aroud 15-30 kilometer where the ozone
layer is located, they release chlrorinr and bromine , this chlorine and
bromine are very powerful group 7 element and can readily react with ozone
thereby reducing the volume of the ozone. With time the layer become very thin
and the destructive radiations of the sun can then penetrate and reach the
earth surface.
The above effect couple by the
effect of greenhouse gases like carbon iv oxides etc, will contribute to the general global
warming, why?
The ozone layer depletion will
increase the intensity of sun ra reahing the earth and the greenhouse effects
will prevent the sun ray[long waves ]
from reflecting back thereby increasing the earth temperature.
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