Answers

2016-02-18T23:25:20+05:30
thinning of the ozone layer in high latitudes, chiefly in winter, attributed to the chemical action of CFCs and other atmospheric pollutants is called ozone hole. it results in increase in ultraviolet light at ground level and gives rise to an increased risk of skin cancer.
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2016-02-19T00:44:19+05:30
Ozone hole is an excessive thinning of ozone layer when
more than half of the ozone gas in a
particular area is depleted, and harmful
ultraviolet rays can pass through to
reach the earth's surface.
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